fishybuisness
Aquarium Advice Freak
i just set up my 55 gallon tank with a 20Long sump. im running a mag 7 return pump and two koralia powerheads..im not sure what the powerheads are rated for but i think they are at least the 800 gph series. so im thinking im pushing about 1800 GPH flow in the tank which is 36 times over...my clownfish are swimming in place hahaha