Quote Originally Posted by mbrown
I have a question, what about a bio filter? is it necessary and where would it be located in the system? I added one by the advice of a member on here and I'm not sure of the purpose. Just looking for conformation. Thanks.
I suggest your read this series of articles titled "Aquaponics 101", starting with part one. I think your question will be answered along with, perhaps, other as yet unasked questions.

Oliver