Originally Posted by Willba200
Give me a DUMMYS answer ..... As in smaller pointing towards surface, lager on the rock??
Getting water flow correct is probably the most difficult part of setting up a reef tank. 3 different powerheads would give you quite a bit of different flow options so I would shoot for:
1 of these
Hydor Koralia Evolution Pump - 600
and 2 of these
Hydor Koralia Nano Pump - 425
Positioning them will be 100% dependent on your scape so you will have to play around with it for a few weeks to get it right. I would position one angled upwards creating surface agitation and the other two can be angled in different directions.