on my 55g tank im running two aquaclear70 filters, both have foam one has ceramic rings the other has carbon bag. my stock is two 4" severums, a 3" synodotis cat, a 2" datnoid, and 5 danios. i dont think im overstocked and my water parameters are perfect but for some reason my water has tons of little particles floating around. i think it could be caused from debris on my plants. i plan on adding an xp3 soon to the tank. would you recommend more foam or something else in my AC filters or perhaps clean the filter media more thats already in the filters?