I have a question, Has any one ever used the foam thats simular to the stuff you would find in couch cushion in a bio filter ?
A friend of mine said it would be toxic but she said thats if you burn it. The foam is very porous and I figured it would be a great place for benificial bacteria to live.
Also another question Has anyone every used septic tank bacteria and enzymes in a pond? Someone told me it would work and it would eat the debris off the bottom of the pond the leaves I cant get to.