Posted: Tue Sep 07, 2010 10:39 am Re: What filter is right for my RES setup?
I use the 5x rule when sizing a filter pump for a tank. That is 5 times the water in the tank. That rule is an at least rule. It is cheaper to use a smaller pump as some of them use fish sizing to size a pump. Some pet stores will tell you that twice the sizing for a fish tank is good enough.Stick with the 5x gph rule and you should be fine. Good Luck !