too much flow?

[Shane52]

Hi I just purchased two hydor koralia powerheads. They are the nano ones which are 425 gph. I have a 20 gallon long reef tank which I plan on having it mixed with soft, lps and some of the easier sps corals. I this too much flow or just about right? Also does anyone have any reading on the placement these powerheads should be?

[bellis31]

It sounds fine and will really depend on how much rock work you have and how you position them!

[Blown 346]

Placement of the powerheads all depend on where the corals are placed and where the dead spots in the tank will be. You will have to play around with them a little until you see the corals reaction and the where the dead spots are.

[h8z2luze]

I was thinking about buying one of the 425 nanos for my 20L I have the older nano PH from them. Not sure what flow rate it is.

[kevin32]

Placement of the power head and where you place ur coral depending on your aquascape is also important. So it really depends.

[kevin32]

Placement of the power head and where you place ur coral depending on your aquascape. Can you post a picture for us to see?