Aquaponics Digest - Thu 02/11/99




Message   1: Redclaw vs Tilapia

             from mdsenger@webtv.net (Michael Senger)

Message   2: Re: Small shipments of Tilapia

             from S & S Aqua Farm 

Message   3: earthworm & pathogens?

             from "Jorg D. Ostrowski" 

Message   4: RE: Pool turning into Reality

             from "Ronald W. Brooks" 

Message   5: Re: Small shipments of Tilapia

             from "Glennert Riedel" 

Message   6: Re: Redclaw Sources in Oz

             from PHRL33A@prodigy.com (MS JEAN R SHAFFER)

Message   7: RE: Pool turning into Reality

             from "Fred Chambers, FMChambers@CSUPomona.edu"



Message   8: RE: Small shipments of Tilapia

             from "Ronald W. Brooks" 

Message   9: Solar Cells

             from james.rakocy@uvi.edu (James Rakocy, Ph.D.)

Message  10: Re: Pool turning into Reality

             from KLOTTTRUE

Message  11: Re: Pool turning into Reality

             from KLOTTTRUE

Message  12: Suppliers

             from HoneyAcres

Message  13: Aquaponic Suppliers

             from HoneyAcres

Message  14: Re: Small shipments of Tilapia

             from KLOTTTRUE

Message  15: Re: Aquaponic Suppliers

             from "Christian J. Hedemark II" 

Message  16: RE: Suppliers

             from Alan Lloyd 

Message  17: Re: Pool turning into Reality

             from KLOTTTRUE

Message  18: Clothing, was Re: Pool turning into Reality

             from S & S Aqua Farm 

Message  19: Re: Clothing, was Re: Pool turning into Reality

             from KLOTTTRUE

Message  20: Fish Markets

             from HoneyAcres

Message  21: Re: Collabrative HUGE Reference

             from "Glennert Riedel" 

Message  22: Re: Pool turning into Reality

             from doelle 

Message  23: Re: earthworm & pathogens?

             from doelle 

Message  24: Re: Pool turning into Reality

             from Dave Miller 

Message  25: Re: Pool turning into Reality

             from Michael Strates 

Message  26: Re: Pool turning into Reality

             from Dave Miller 

Message  27: Re: Pool turning into Reality

             from Dave Miller 

Message  28: Re: Pool turning into Reality

             from Michael Strates 

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| Message 1                                                           |

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Subject: Redclaw vs Tilapia

From:    mdsenger@webtv.net (Michael Senger)

Date:    Thu, 11 Feb 1999 00:26:09 -0700 (MST)

Having had a year of aquaculture experience with both tilapia and

redclaw I feel the redclaw is not worth the trouble.  They really  have

very little meat on them, grow slowly, die for no reason, the males

constantly kill and mutlilate each other, they like to climb out of

their tanks.  They will also capture and eat small tilapia.  When I put

redclaw and tilapia together, the tilapia get very nervous . 

 The tilapia  are so much easier and so much more rewarding..

Some lessons I have learned.  

(1)  Feed the fish the right sized food.  If your pellets are too large,

the fish have a hard time eating it and their growth will suffer.  

(2)   Keep the fish warm.  Even in a greenhouse in Arizona, water

heating in winter is the main economic cost factor in raising tilapia.

Cold fish get sick, and sick fish die.  Solar can be effectively used,

but large amounts of water require  a lot of heat. 

(3)  Think small.  It is better to have 75 pounds of fish in 150 gallons

of water kept at the right temperature than to have 75 pounds of fish in

500 gallons that is too cold.  If you just want fish for you and your

family , you may be able to get by with a couple of small, well

insulated, well managed  tanks.

(4)  In arid climates, when using recirculating aquaponics, the

evaporative cooling effect is significant,  and seriously lowers fish

tank  water temperature.  This is of benefit in summer, but not in

winter. 

(5) Pump lots of air in each tank. Fish and plants can live a long time

without main pump recirculation of water especially at night and in

winter.  Sometimes it is better just to pump air   rather than continue

recirculation,  if water temperature can be better maintained.  A big

air pump only uses about 40W. 

(6)  In general, the S&S system has worked well for me.

(7)  Add earthworms to  the gravel beds.

 Sprinkle fresh earthworm castings over the bed surface periodically

(micro biological bacterial innoculant).    

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| Message 2                                                           |

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Subject: Re: Small shipments of Tilapia

From:    S & S Aqua Farm 

Date:    Thu, 11 Feb 1999 08:09:23 -0600

At 08:24 PM 2/10/99 EST, Ken wrote:

>how many tilapia can you grow, in say 1000 gallons of water?

Ken - we suggest stocking at no higher than 1/2# per gallon of water, with

maximum set at 3/4# per gallon.  The number of fish produced would depend on

your proposed market size, but for initial calculations 500# to 700# should

be reasonable.

Paula 

S&S Aqua Farm, 8386 County Road 8820, West Plains, MO 65775  417-256-5124

Web page  http://www.townsqr.com/snsaqua/

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Subject: earthworm & pathogens?

From:    "Jorg D. Ostrowski" 

Date:    Thu, 11 Feb 1999 07:16:59 -0700 (MST)

You said:"(7)  Add earthworms to  the gravel beds.

 Sprinkle fresh earthworm castings over the bed surface periodically

(micro biological bacterial innoculant). "

____________________________________________________________________

Michael/Horst: Is the introduction of the above into a hydroponic

system a concern from a pathogen/virus point of view, if the

the water ends up in a marsh used for growing plants for food

and subsequently in fish tank (in our case not for food)? Jorg Ostrowski

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| Message 4                                                           |

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Subject: RE: Pool turning into Reality

From:    "Ronald W. Brooks" 

Date:    Thu, 11 Feb 1999 11:07:21 -0500

it should work just fine. as long as you make sure that it is non treated

as some of the newer plastics are coated to reduce condensation and reduce

algae and mildew.

I have used 6 mil to make bogs inside and out and get a couple of years life

out of them

Ron

-> -----Original Message-----

-> From: aquaponics

-> [mailto:aquaponics]On Behalf Of KLOTTTRUE

-> Sent: Wednesday, February 10, 1999 8:44 PM

-> To: aquaponics@townsqr.com

-> Subject: Re: Pool turning into Reality

->

->

-> I know it would be better to use 20 or 30 mil,but I'm one of those do it

-> yourselfers,who tries to keep cost to a minimum until I see if

-> it is going to

-> work for me.Would it be possible to use the 6 mil poly

-> greenhouse plastic on a

-> trial basis,even if it is just for a year or two? Does anyone know if its

-> toxic.Thanks Ken

->

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| Message 5                                                           |

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Subject: Re: Small shipments of Tilapia

From:    "Glennert Riedel" 

Date:    Thu, 11 Feb 1999 09:25:58 PST

Thanks for the information Ronald, I'll check it out. I'm not looking  

for mixed sex Tilapia but they might be helpfull

Glennert

>I must of deleted the post on who was looking for small quantity's of

>mixed sex Tilapia . I have found a source that is very reasonable ( .25

>@ ) shipping is $50 no matter amount ( shipped overnight)

>

>Contact

>Living Waters Tilapia Farm

>(601)795-8094

>they are happy to ship small orders

>

>I also have a contact in Florida for Wild caught Tilapia . these are 

part

>of an exotic removal program if you want this name drop me a line

>

>Ron

>The One Who Walks Two Paths

>

______________________________________________________

Get Your Private, Free Email at http://www.hotmail.com

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| Message 6                                                           |

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Subject: Re: Redclaw Sources in Oz

From:    PHRL33A@prodigy.com (MS JEAN R SHAFFER)

Date:    Thu, 11 Feb 1999 12:41:45, -0500

Michael 

Your answers were very encouraging on yabbies.  In the Pacific NW our 

solar gain is not enough to run a panal, for weeks to months on end.  

But running a hose into the tank is a complete possibility during the 

winter since the tank will be fed from roof top runoff via roof 

gutters into the tank!!  I went to the web page put out by the W 

Australia government fisheries.  Marron (the native greyfish there) 

sounds even more ideal for unheated aquaculture in dank rainy cold 

old Washington, USA.  

Jean

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| Message 7                                                           |

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Subject: RE: Pool turning into Reality

From:    "Fred Chambers, FMChambers@CSUPomona.edu" 

Date:    Thu, 11 Feb 1999 09:57:27 -0800

>     ...  he suggested to get a several thousand

>gallon plastic rainwater cistern, cutting the top off that and using it as

>a deep swimming pool and also as a small aquaculture pool.

>

>The one we saw is about 6ft deep, and has a diameter of about 6.5 feet. I

>want to install it inside of my greenhouse. Hopefully we'll be able to

>purchase an old cheap one ($300-500) from up country and the aquaponic

>pool should turn into a reality in about 30 days!!

>

STOP -- Don't pay that much.  Assuming you are talking US Dolalrs, the

price range you are using is far too high.  The Center for Regenerative

Studies, where I did a lot of aquaculture, bought a couple dozen "Sun-Lite

"tanks from 

Solar Components in New Hampshire.  A couple of our prof's who had gone to

New Alchemy, swore by them.  They cost about $200 a piece, with dramatic

reductions if you buy in volume.  Look them up at

http://www.solar-components.com

The tanks are lightweight, and very translucent for light frequencies

necessary for photosynthesis.  The tanks green up nicely in a day or two,

ready for tilapia or other planktivores.

I would not want to use a water tank for a  swimming/soaking tub because

the fiberglass may irritate your skin.  Tanks meant for fish may have the

fiber-substrate in a more inert state. 

>So, here come all of the questions. If I fluke a working pool, then I'll

>

>My main concern is any pathogens which might get in the water. So far, my

>results with chlorine dioxide has been pretty bad.. 7/10 fish died after

>my dose per gallon exceeded one teaspoon. This wasn't enough to keep the

>algae and pathogens out, by the looks of things.

>

If you feel that you have to sterilaize the incoming water, do it in

batches, before you add it to your culture water.  With a little thought,

you could probably even automate this phase.

Algae is good!  It is working *FOR* you.  It converts nitrogenous wastes

back into 

food.  Filter feeding animals like tilapia, silver carp, and bivalves

harvest the plankton.  If you don't put filter feeders in, then put carp,

like common carp or goldfish.  As the phytoplankton and zooplankton die,

they settle out of the water column.  Carps and crayfish will eat this

detritus.

Keep your tank in the sun.  In the winters, a cover made from clear ag

plastic keeps the tank warm enough for tropicals outdoors in the snow.

Fred

FMChambers@csupomona.edu                        Agricultural Sciences

-------------------------------------------------------------------------

The Black Walnut Alliance is one of many campus groups encouraging Cal Poly

to explore environmentally responsible uses of campus green spaces.  Visit

and post at sites urging alternatives to golf: 

http://www.csupomona.edu/~jmikeda/la401/cap/ (Clean Air Park Proposal)

http://www.regen.org/bwecc.html (BWA's Energy Center Proposal)

http://www.intranet.csupomona.edu/~muse/  (Multi-Use Development Strategy)

http://www.rokcircle.com/bbs/ (The Wilderness Forum)

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| Message 8                                                           |

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Subject: RE: Small shipments of Tilapia

From:    "Ronald W. Brooks" 

Date:    Thu, 11 Feb 1999 14:04:14 -0500

they also sell sex reversed all male ( Pennyfish )

Ron

-> -----Original Message-----

-> From: aquaponics

-> [mailto:aquaponics]On Behalf Of Glennert Riedel

-> Sent: Thursday, February 11, 1999 12:26 PM

-> To: aquaponics@townsqr.com

-> Subject: Re: Small shipments of Tilapia

-> 

-> 

-> Thanks for the information Ronald, I'll check it out. I'm not looking  

-> for mixed sex Tilapia but they might be helpfull

-> 

-> Glennert

-> 

-> >I must of deleted the post on who was looking for small quantity's of

-> >mixed sex Tilapia . I have found a source that is very reasonable ( .25

-> >@ ) shipping is $50 no matter amount ( shipped overnight)

-> >

-> >Contact

-> >Living Waters Tilapia Farm

-> >(601)795-8094

-> >they are happy to ship small orders

-> >

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| Message 9                                                           |

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Subject: Solar Cells

From:    james.rakocy@uvi.edu (James Rakocy, Ph.D.)

Date:    Thu, 11 Feb 1999 16:15:01 -0400 (AST)

Fred, The New Alchemy group hyped those solar cells in the early 80s and

produced reams of data (much of this work was funded by the National Science

Foundation). Unfortunately, solar cells, consisting of a little more than

500 gallons (2 m3) of water, could only produce about 10 lbs. of fish per

crop. I think that even a hobbyist would want more fish than this.  It is

based on pond aquaculture except light could penetrate from the sides and

produce more algae. As a result, it increased pond production levels from

0.5 kg/m3 to about 2 kg/m3 with aeration, the limitation being that the

waste had to be treated (broken down) within the tank. In our recent

greenwater trial we obtained production of 17 kg/m3 by removing solid waste

twice daily and shifting from an algal-based system to a bacterial-based

system, although algae was still present in abundance and was utilized for

food by the fish. These are good bacteria that break down organic matter and

transform ammonia to nitrate. We once hooked up one of these "Sun-Lite"

tanks to hydroponic beds (creating an aquaponic system) and produced 365

lbs./crop at a final density of 81.6 kg/m3. The question is this: Do you

want to produce 2 kg/m3, 17 kg/m3 or 81 kg/m3? With solar cells the

researchers applied extensive production principles to a 2 m3 tank, when

these principles were really meant for huge water volumes, say 25 acre ponds

(100,000 m3), where low-input, low-output production might be profitable

when multiplied by a large factor.  As a result, no one that I know of ever

used solar cells as a fish growout system after the New Alchemy Institute

closed. The "Sun-Lite" tanks are fragile and you cannot stand in them. Jim R.   

>STOP -- Don't pay that much.  Assuming you are talking US Dolalrs, the

>price range you are using is far too high.  The Center for Regenerative

>Studies, where I did a lot of aquaculture, bought a couple dozen "Sun-Lite

>"tanks from 

>Solar Components in New Hampshire.  A couple of our prof's who had gone to

>New Alchemy, swore by them.  They cost about $200 a piece, with dramatic

>reductions if you buy in volume.  Look them up at

>http://www.solar-components.com

>

>The tanks are lightweight, and very translucent for light frequencies

>necessary for photosynthesis.  The tanks green up nicely in a day or two,

>ready for tilapia or other planktivores.

>Algae is good!  It is working *FOR* you.  It converts nitrogenous wastes

>back into 

>food.  Filter feeding animals like tilapia, silver carp, and bivalves

>harvest the plankton.  If you don't put filter feeders in, then put carp,

>like common carp or goldfish.  As the phytoplankton and zooplankton die,

>they settle out of the water column.  Carps and crayfish will eat this

>detritus.

>

>Keep your tank in the sun.  In the winters, a cover made from clear ag

>plastic keeps the tank warm enough for tropicals outdoors in the snow.

>

>Fred

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| Message 10                                                          |

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Subject: Re: Pool turning into Reality

From:    KLOTTTRUE

Date:    Thu, 11 Feb 1999 18:39:57 EST

When you are working in an aquaponic enviroment,do you need to wear any type

of protective clothing?

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| Message 11                                                          |

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Subject: Re: Pool turning into Reality

From:    KLOTTTRUE

Date:    Thu, 11 Feb 1999 18:45:40 EST

Thanks for the reply,I checked with the salesman where I bought it today,he

said it was O.K.,but I like to ask someone with experience.He also sells 45

mil rubber pond liners,any thoughts on that? Thanks Ken

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| Message 12                                                          |

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Subject: Suppliers

From:    HoneyAcres

Date:    Thu, 11 Feb 1999 18:42:33 EST

Does anybody know a supplier of aquaponic systems? (websites?)

 Thanks, 

     Steven 

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| Message 13                                                          |

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Subject: Aquaponic Suppliers

From:    HoneyAcres

Date:    Thu, 11 Feb 1999 18:59:16 EST

Does anybody know suppliers of COMMERCIAL AQUAPONIC SYSTEMS?

 Thanks,

     Steven

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| Message 14                                                          |

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Subject: Re: Small shipments of Tilapia

From:    KLOTTTRUE

Date:    Thu, 11 Feb 1999 18:55:32 EST

Hi Paula and Tom,I found a local feed store today,that sells black round poly

tanks,300 gallon for $195.00,What do think?I believe I'm going to go ahead and

try your system,if I send you a money order and include enough for postage,can

you send it next day mail? Thanks Ken

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| Message 15                                                          |

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Subject: Re: Aquaponic Suppliers

From:    "Christian J. Hedemark II" 

Date:    Thu, 11 Feb 1999 19:26:19 -0500

HoneyAcres wrote:

> Does anybody know suppliers of COMMERCIAL AQUAPONIC SYSTEMS?

Steven, your first message less than 15 minutes before this one came

through fine BTW.  Check out http://www.aquatic-eco.com

-- 

Christian J. Hedemark II

http://www.yonderway.com

"Where is Bill Gates taking you today?"

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| Message 16                                                          |

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Subject: RE: Suppliers

From:    Alan Lloyd 

Date:    Fri, 12 Feb 1999 11:34:43 +1100

Try     kirsty@intergate.bc.ca  and ask her for details.

I also used the Msn search engine and found a lot of references.  Typed in

Aquaponics and got a surprisinging wide response.

Hope it is of help.

I've only just got into this mail list. (registered yesterday!!). So hope

someone else add to your info search.

Regards,

Alan

 

> -----Original Message-----

> From: HoneyAcres [SMTP:HoneyAcres]

> Sent: Friday, February 12, 1999 10:43 AM

> To:   aquaponics@townsqr.com

> Subject:      Suppliers

> 

> Does anybody know a supplier of aquaponic systems? (websites?)

>  Thanks, 

>      Steven 

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| Message 17                                                          |

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Subject: Re: Pool turning into Reality

From:    KLOTTTRUE

Date:    Thu, 11 Feb 1999 19:08:16 EST

Hi Lars, I went to the Dekalb Farmers market today, to check out the fish,

pretty neat, bought some Tilapia to try, they're good eating fish. Thanks for

the tip.

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| Message 18                                                          |

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Subject: Clothing, was Re: Pool turning into Reality

From:    S & S Aqua Farm 

Date:    Thu, 11 Feb 1999 18:27:55 -0600

At 06:39 PM 2/11/99 EST, Ken wrote:

>When you are working in an aquaponic enviroment,do you need to wear any type

>of protective clothing?

What type of protection do you envision needing?  Other than clothing suited

to the temperatures and shoes that don't mind the occasional puddle, I'd say

nothing special -- based on our experiences.  With no chemical applications

there should be no need for the protective suits they wear for insecticide

spraying, etc.  

Or did you have something else in mind?

Paula

S&S Aqua Farm, 8386 County Road 8820, West Plains, MO 65775  417-256-5124

Web page  http://www.townsqr.com/snsaqua/

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| Message 19                                                          |

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Subject: Re: Clothing, was Re: Pool turning into Reality

From:    KLOTTTRUE

Date:    Thu, 11 Feb 1999 20:41:37 EST

Don't evision any, just asking.

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| Message 20                                                          |

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Subject: Fish Markets

From:    HoneyAcres

Date:    Thu, 11 Feb 1999 20:46:54 EST

Does anyone know of any markets in the Delaware/Maryland Area to sell

aquaponic fish? Is their a website that has the cost and return for

aquaponics?

  Thanks

     Steven

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| Message 21                                                          |

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Subject: Re: Collabrative HUGE Reference

From:    "Glennert Riedel" 

Date:    Thu, 11 Feb 1999 19:45:15 PST

I'm just starting. As soon as I have some experience I would like to 

help

Glennert

______________________________________________________

Get Your Private, Free Email at http://www.hotmail.com

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| Message 22                                                          |

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Subject: Re: Pool turning into Reality

From:    doelle 

Date:    Fri, 12 Feb 1999 15:57:34 +1100

At 03:01 AM 12/02/99 +1100, you wrote:

>

>Legionella spores float in the air, and could probably be in the

>greenhouse air anyhow. Assuming that spores get into the water, will the

>bacteria grow and prosper in the aquaponics environment. I realise that

>most of these pathogens are anerobic, so I'd assume heavy and frequent

>aeration is a good idea?

It certainly is a good idea and will minimise anaerobic pathogens.

>

>I generally supplement the aquaponics water with small amounts of liquid

>worm castings (just what runs off the wormfarm). I know that it is very

>rich in bacteria. Would it be okay if I chlorinated/uv sterlized (both)

>the casting "tea", and then run the tea through activated carbon, leaving

>a sterile tea to mix with the aquaponics feed?

>

I tink you will find that chlorination will in general do the trick. As you

know, we use chlorination very successfully in swimming pools.

>Does peroxide kill some that chlorine doesn't? I was thinking of trying

>ozonation of the water. I have the absolute simplest way to produce

>ozone.. I brought a $23 jacobs ladder from the local electronics

>retailer.. I'm going to seal this in a glass tank and run air through one

>end, leave for a few minutes and then hopefully ozone will emerge from the

>other end.

>

>In the test which I tried yesterday, the ozone seemed to kill EVERYTHING

>in the sample of humanure/water which I treated... very promising.

>

Ozone is certainly very effective, whereas one has to be careful with UV,

since UV can result in 'changed or mutated ' pathogens. For your purpose,

however, uv certainly will help. In comparing both methods I think that

ozone is more effective. However, I have not done a comparative experiments.

I am a bit suspicious about using UV, the reason of which is simply that we

used to use UV for producing mutants.

Best regards

Horst

Horst W.Doelle, D.Sc., D.Sc. [h.c.]

Chairman, IOBB

Director, MIRCEN-Biotechnology

FAX: +617-38783230

Email: doelle@ozemail.com.au

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| Message 23                                                          |

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Subject: Re: earthworm & pathogens?

From:    doelle 

Date:    Fri, 12 Feb 1999 16:10:11 +1100

At 07:16 AM 11/02/99 -0700, you wrote:

>

>You said:"(7)  Add earthworms to  the gravel beds.

> Sprinkle fresh earthworm castings over the bed surface periodically

>(micro biological bacterial innoculant). "

>____________________________________________________________________

>Michael/Horst: Is the introduction of the above into a hydroponic

>system a concern from a pathogen/virus point of view, if the

>the water ends up in a marsh used for growing plants for food

>and subsequently in fish tank (in our case not for food)? Jorg Ostrowski

>

The gravel will absorb most pathogens, but I certainly would like to see a

good aeration in the pool to make sure that pathogens do not grow happily in

eventually anaerobic conditions. Also one has to watch that the gravel is

not eventually coated with pathogens.

In the case of earthworms, however, I have not heard of any serious

problems, since they live in the soil and not necessarily in manure.

Always keep in mind that pathogens come from human or animals . 

Cheers

Horst

Horst W.Doelle, D.Sc., D.Sc. [h.c.]

Chairman, IOBB

Director, MIRCEN-Biotechnology

FAX: +617-38783230

Email: doelle@ozemail.com.au

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| Message 24                                                          |

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Subject: Re: Pool turning into Reality

From:    Dave Miller 

Date:    Fri, 12 Feb 1999 00:06:48 -0500

Horst,

If I followed the thread correctly, this water will be used for

aquaponics ie. fish and algae, etc.

Also, why encourage chlorination which means more dioxin in the

environment?

Aeration is certainly the best as nature does so with waterfalls and

such...Also the cost from a short AND long term affect would probably

suggest a windmill which turns paddles in the water or brings buckets up

in assembly like fashion and dumps them onto a screen to further aerate

the water.

Sounds like a plan to swim with.

--

Dave

_______________________________________

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¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯

A "green" home remodeler

A father of 2 cockatiels

An organic farmer

A veggie drummer/keyboardist

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| Message 25                                                          |

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Subject: Re: Pool turning into Reality

From:    Michael Strates 

Date:    Sat, 13 Feb 1999 03:18:35 +1100 (EST)

On Fri, 12 Feb 1999, Dave Miller wrote:

I know this isn't addressed to me, but I'll answer anyway:

DM> If I followed the thread correctly, this water will be used for

DM> aquaponics ie. fish and algae, etc.

Yes, but the water must also be used for swimming in, which is where all

of the complexity comes from. The system must be completely free of

pathogens, or close to it.

DM> Also, why encourage chlorination which means more dioxin in the

DM> environment?

Because its a surefire way to remove pathogens inexpensively. I'm actually

seriously considering ozonation.

DM> Aeration is certainly the best as nature does so with waterfalls and

DM> such...Also the cost from a short AND long term affect would probably

DM> suggest a windmill which turns paddles in the water or brings buckets up

DM> in assembly like fashion and dumps them onto a screen to further aerate

DM> the water.

If the water is constantly aerated, theres no way anerobic pathogens can

grow, right? If that is the case, I have enough air coming from a

compressor to line the whole bottom of the pool with airstones (underneath

the rocks). This would stir up the water though, and it wouldn't be

pleasant to swim in. How about several water falls near the sides and one

big underwater bubbler in the middle, which can be shut off when we're

swimming in it?

--

e-mail: mstrates@croftj.net   www: http://www.croftj.net/~mstrates

See keyservers for PGP info.  Linux! The OS of my Choice!

"Once you have flown, you will walk the earth with your eyes turned

skyward, for there you have been, and there you long to return."

- Leonardo da Vinci, and below an extract from John Fogerty's song:

Hey, Tonight - Gonna be tonight- Don't you know I'm flyin'- Tonight

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| Message 26                                                          |

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Subject: Re: Pool turning into Reality

From:    Dave Miller 

Date:    Fri, 12 Feb 1999 00:22:06 -0500

I sense a jacuzzi coming on.

--

Dave

_______________________________________

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A "green" home remodeler

A father of 2 cockatiels

An organic farmer

A veggie drummer/keyboardist

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| Message 27                                                          |

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Subject: Re: Pool turning into Reality

From:    Dave Miller 

Date:    Fri, 12 Feb 1999 00:26:35 -0500

Actually, some lakes have had put fountains in the middle.  I assume

this is more than just for romantic attention.  Just how much aeration

is needed.  Like a fan, how many water turnovers/day or whatever are

needed to keep the water free of pathogens.

Anyone know the rate?

--

Dave

_______________________________________

«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»§«¤»¥«¤»§«¤»

¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯

A "green" home remodeler

A father of 2 cockatiels

An organic farmer

A veggie drummer/keyboardist

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| Message 28                                                          |

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Subject: Re: Pool turning into Reality

From:    Michael Strates 

Date:    Sat, 13 Feb 1999 03:33:37 +1100 (EST)

On Fri, 12 Feb 1999, Dave Miller wrote:

DM> Actually, some lakes have had put fountains in the middle.  I assume

DM> this is more than just for romantic attention.  Just how much aeration

DM> is needed.  Like a fan, how many water turnovers/day or whatever are

DM> needed to keep the water free of pathogens.

Can't answer your question.. Hopefulle Horst will be able to answer this

one, however - there is a dam near our house which is built on top of a

rubbish tip and a fountain runs 24 hours a day to keep the methane in the

lake bed.. the whole area has "NO SMOKING" and "KEEP OUT" signs

everywhere, but what do I care? :-)

S&S Aqua Farm, 8386 County Road 8820, West Plains, MO 65775  417-256-5124

Web page  http://www.townsqr.com/snsaqua/



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