My FOWLR has a single 4x7 filter sock in a 30G sump for a medium-stocked 130G DT. It's kind of a pain to keep at it due to its placement. I was wondering if anyone thought of using stock grocery store live longneck clams or muscles as an alternative, as they are natural filter feeders and would be presented with (I think) a good supply of food. That's the upside. What would be the downside?
Thoughts?
Thoughts?