Flow

[pixiesandfairies]

I have just got my first marine tank a river reef 94. I also got a aquaclear 20 power head. Where should i put the 20?

 

[Crazy fishes]

Firstly have a look on the powerhead at the max flow rating and see how many times it circulates your tank volume. If you are keeping corals you want a minimum of 10x turnover people say ideally 20x but it depends on a number of factors. If you a using a single powerhead you want it to be causing the most surface agitation that is possible. It is essentially a trial and error ordeal.

Regards

 

[pixiesandfairies]

Hi Thanks for the reply. The RR comes with two power heads fitted and i have got an extra one. The bottom standard one is low down in the tank and pointed down, the top one is braking the surfaceand going accross the tank towards the filter in take. So that just leaves the extra powerhead to deside where to put?

 

[ben1987]

do it directly accross the back wall of the tank and leave a gap behind the rock so you get a lot of flow over the rock

 

[pixiesandfairies]

That sounds like a good idea thanks!