I read from different forums that a heavily planted tank should have 10x the circulation of a tank. Assuming the formula would be 10 (10 gallon) x 10 gph = 100 gph. Atm I have a penguin 150b and it's doing pretty well for a filter but I don't think the circulation is good enough. Now I am wondering if I should purchase canister or a HOT magnum. Please help me out. Thanks!