will i have enough water current?

[pebble]

so i have a 300gph pump built in a 29 aiming toward the top area of the tank. thinking of getting a powerhead approx 85gph to get more flow in the bottom section. will that be enough? tank is only about 20l/20w/20h

[Reefscape]

How much flow you need depends on what is in the tank...type of stock etc etc..

Niko

[BeelzeBob]

fowler, youd want like 300-600 gph

reef, 600-1200 gph

[Subliminal]

It does depend on what you want in your tank. I have about 900+ GPH in my 29g and feel that the current could be a little stronger.

When I used powerheads, I found that two maxijet 1200s were a pretty good match for the 29g tank. (295gph each)