My boyfriend has a 50gal NW cichlid tank (and a few idiot barbs) and the substrate is fairly course sand. For filtration he has two AC 70's but water isn't really moving much thru the tank so he's considering one of the Koralia powerheads. The trouble is in deciding how many gph he should get, either 400 or 600. The tank isn't planted although he's considering changing it around in the future.
Which powerhead would people recommend, a little less than 10gph per gallon or a bit more?
Thanks!
Which powerhead would people recommend, a little less than 10gph per gallon or a bit more?
Thanks!