I expect the humidity will probably be the biggest thing you should worry about. Do you already have a dehumidifier for the basement?
Daniel, that's more water loss than I have. Is your water heated, or is your evaporation all from the growbed and hot lights? I lose much less, but I have a T-12 two tube 4' fixture, which is very cool and not very bright. Maybe it's because my plants aren't that big yet and I don't have alot of transpiration going on because of that?
what kind of fish are you raising and what temp are you keeping it at?
Hi Calvin, I found your post on the basement set-up this past winter. Did it work? What fish are you using? I'm trying to find a source for tilapia but no luck in Ontario. Any advice on fish? Thanks, Jill
Bluegill are an appropriate fish for smaller setups and they don't require you to heat the water over 20 C to keep them eating.
If you can do a larger tank (like 1000 liters or 300 gallons) you could raise catfish but I don't like to grow them out in smaller tanks since I grow them so big.
If your basement is going to stay pretty cool, you might even grow some trout but you need lots of aeration and water flow for them.