My display tank is 75 gallons. With the return pump off I calculated that 6.5 gallons will flow back down into the sump, so that's how I determined how high the baffles should be. I'll have my skimmer sitting on eggcrate; I have plenty of height above the sump for that.
Should my refugium/return divider be higher than my skimmer/return baffles or does that not matter?
I'm not going to have an ATO initially, so I was planning on the splitting the 23 inches I have for the skimmer and refugium, in half.