I have a 75gal wide tank and was curious on what pumps and power heads i need. I have a refungium pump and a boyu skimmer (got for $5) but will upgrade to a reef octopus after cycling. Any suggestions?
Considering that SPS tend to prefer high water flows, I think you should aim for the upper band of the 30-50x turnover. So up to 3750 gph total flow, less the 500 or so your sump pump will provide, puts you in the vicinity of 3000-3250 gph.