Cooling system for trout / heating for perch

[Ravnis]

might consider putting a tank underground and trying to take advantage of geothermal heat exchange. Would be a pain to build but the temperater should be more constant and closer to the temperature that trout like. If a system could be build you would only need to power a pump

[bart]

i have built system to cool houses you need a high thermal mass material burried underground to transfer heat from building or tank to mass

[Murray]

Hi Bart, Can you explain your system or better still som photos with description.

[jpcw]

If you have cool enough nights you can actually use a solar heating arrangement in reverse. When we got out pool installed we had a solar heater put in, just the basic black pipe arrangement but with a computerised controller. On of the options it has is to actually cool the pool water by running the system at night while the outside temp (on the roof) is cooler than the watter thus cooling the pool.

[jpcw]

Our chest freezer has recently expired.

Looks like I acquired a cheap fishpond.
After looking more closely at the freezer, I'm not sure that you could push a pipe through it without affecting the cooling mechanism. Does any one know if the chest freezers work from the bottom of the unit or both bottom and sides?

One other way would be to work out a system of piping it through the lid.

Take the hinges off the lid then plumb in everything to the lid with quick disconnects on the outside. You can then just lift the lit out vertically and all the tubing comes with it.

[fuzvulf]

One problem I would see is the possibility of the water freezing in the pipes should flow be interrupted. I have been racking my brains as well trying to figure a way to cheaply heat and cool the system I am trying to design. The reverse solar sounds interesting. Has anyone had the outsides of their tanks sprayed with say 15 cm of the cyano spray foam insulation?

[fishfood]

I have thought of those cooling towers how would you go with legionnaires disease

[Outbackozzie]

Only a problem at really high temps FF.

from the internuts:
the bacteria reproduce at the greatest rate in stagnant water at temperatures of 35 °C to 46 °C

Its not found in normal household sized evap coolers, and the Trout farm at Pemberton use them without any problems.

Blue Evap Box:
http://wa-donaghy.smugmug.com/photos/512332701_HCXRi-M.jpg

[fishfood]

Thanks OBO so looks like we make one then cos i really like trout
on another note looks like i just solved my winter heating problem somebody dumped a full solahart split system [heat pump ss water exchanger and 2 sola panels complete with hot water circulating pumps

[Outbackozzie]

Yeah, they reckon they are good for 2 - 4 degree temp drops, still wouldnt be enough for me I dont think.

[Dufflight]

You just need a ft inside near the air con.:D Or inside an old freezer turned down low.

[fishfood]

You just need a ft inside near the air con.:D Or inside an old freezer turned down low.
Tried the freezer bit with little success

[moet poep]

Hi Guys, from the time I was intro'd to this site my mind was just blown away. My wife is busy packing her bags. What I read here is keeping me away from everything else that I'm fumbling about with. I will talk more about what I've decided to fumble with next later.
Just reading about controlling water temp. for trout/perch, how about a jacketed vessel (double skinned or dimpled plated) whereby the water passing through the jacket can be controlled or a vessel with FDC unit blowing onto outer side of tank to cool it down.

Regards,

moet poep.

[fishfood]

Probley wont work in a good ap system you should move your ft volume once per hr even though your fish tank may be cool once the water goes through the grow beds they are the best heat sink there is also the air [you will need air for trout ] will eather cool or heat water [last summer the air going into my ft was 38 deg
Once you try to heat or cool it costs money best to go for what ever fish will suit your climate

[Dufflight]

Tried the freezer bit with little success

I was meaning put the fish in the freezer. Get trout fingerlings early and keep them in a freezer with a better temp controller. Maybe give the inside a fiber glass coat or drop in a half blue drum. Then move them to your system when the ft water is colder. And by then your fish would be starting at a larger size.

I have 2 coolrooms that I could put ft's inside. They don't take a lot to run if your only cooling to 20dergees. But you would have to keep the bio filter inside so there is not a constant heat exchange.