I have been trying to find some info around here, about how many GPH of water movement would be sufficient for a Live rock, Live sand Saltwater tank thats only 55G...Tank is Regular dimensions.. Also my main goal is to have some like featherdusters and little things like that, but for fish i want like a DwarfLion... any advice on what size pvc tubing should be used? and how many GPH would be ideal in your opinions.. thanks MFK'ers!

