water quality during the winter

[Lee]

I'd like to keep fish in my tank all year round and was interested in ways to keep the water quality good during the winter without having grow beds to run the water through. I live in NC in the USA and winters can get down to the 20's.

[Hamish]

You could set up a canister filter - i have just added one to my system. You can see it in my thread here http://www.aquaponicshq.com/forums/showpost.php?p=4695&postcount=91