It's a small 6X8 polycarbonate greenhouse. Have a 3X4X1 media bed with an external sump and the fish tank partially snak into the ground about 8 inches...
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Foxwood Run Farm, LLC
York, PA
for cooling you'll need air flow through the gh, for a cheap solution, you could use a diy swamp cooler if your humidity isn't too high..
your gb will act as a heat sink, insulate if you can, or cover with something reflective..
running a chiller would get pretty expensive.. when it got real hot here during my first season, i froze milkjugs full of water and used them in the ft... i had 4 or 5 1gallon jugs that i would rotate out during the day
I have heard of a cooling method that sinks aluminum stakes deep into the ground and comes up around and into the sump tank. This acts as a type of heat sink. The deeper the stakes into the ground cools them and transfers that to the sump....
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Be careful using the cooper tubing to directly run your AP water through, as some of the metals can leach into the water and harm your fish in some cases. For a small system such as yours I would think about digging a deep hole outside your greenhouse and burying a coil or so of Pex pipe, then either circulating your AP water or a portion of it through there, or preferably use clean water in a closed loop with a separate pump, connected to another coil in a sump with your AP water and use it like a heat exchanger.
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