i have 14 or so sponges on a lp60 and it works well. Ideally i would have a flow control on each filter but i dont. Some sponges need to be elevated of the substrate to get air. But all work well when balanced.
Has anyone tried this food for africans/tangs? If so how does it compare to flora? Also does anyone have experience using continuum fraction D dechlorinator? Seems to be getting harder to find 1kg tubs of safe.