ScubaPrawn
08/10/2010, 08:50 AM
I have a 47g column tank that is about 30 inches tall. I have only one powerhead, a Koralia 1 (440gph) in the tank. I also have an Aquaclear 110 as the filter to help with flow.
I definitely need more flow especially near the bottom of the tank. I'm battling cyano and when I feel the flow from the K1 with my hand, it doesn't feel like nearly enough power to keep the water circulating well. Should I get a K2 (600gph) or K3 (850gph)? Or should I get another K1 because either of the other two would be too much direct force?
I'm confused because there seems to be a lot of material out there that says you need 3-5 times the gallons in your tank, which doesn't seem like it would be near enough for even a normal tank.
I definitely need more flow especially near the bottom of the tank. I'm battling cyano and when I feel the flow from the K1 with my hand, it doesn't feel like nearly enough power to keep the water circulating well. Should I get a K2 (600gph) or K3 (850gph)? Or should I get another K1 because either of the other two would be too much direct force?
I'm confused because there seems to be a lot of material out there that says you need 3-5 times the gallons in your tank, which doesn't seem like it would be near enough for even a normal tank.