View Full Version : Flow in a 20 gallon long?

Sink Colin Sink
05/21/2007, 01:51 PM
I have a FW 20 gallon long that I want to convert to SW, I already have an AC 50(200), I just want to keep LPs and softies, what else do I need for flow?

05/21/2007, 02:31 PM
Shoot for 20x + Tank volume. 400 + gallons. A Couple of the smaller Hydor Koralias should do the trick.

Sink Colin Sink
05/21/2007, 04:58 PM
The smallest Koralia I've found is rated at 400 gph, this combined with my AC50 should be enough flow, right? Would it just be better to use powerheads?

05/21/2007, 05:32 PM
Right now in my 20L I have an AC110 and a koralia 1. I'm going to add a koralia 2 and remove the ac110 after i install my sump.

For just softies and lps, two koralia 1s would work great.

Sink Colin Sink
05/21/2007, 05:44 PM
So that wouldn't be too much flow with each koralia pumping about 400 GPH? That's 800 gph total...

Sink Colin Sink
05/21/2007, 06:28 PM

05/21/2007, 06:33 PM
With your HOB filter you would be fine with an additional powerhead like a Maxijet 900. If you want a ton of flow get two Maxijet 900s. A Maxijet 900 is 8.5 watts and 230 GPH.