 Re: Powerhead Question
Do you mean the Hydor Koralia ph? They move a lot of water & use very little power. Ideally what you are looking for is no dead spots in your tank - I'd get either the 2 or 3. I think the #4 would be too much current. What do you have now for a return pump?You don't want so much current that the fish can't swim against it or that the corals are getting blown all over the place.
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