Im trying to set up a 240g saltwater tank properly so I really need your help. My first question is about lighting. I think I know the general rule is 3-5w per gallon (this is general Im sure because of par) for some mushrooms...... My question: Is that for the water volume before liverock and sand or after?
My next question involves flow, I have two 2" drains that I plan on reducing to 1.5". which will still drain 2400 gph
? with a sytem of ball or gate valves for pipe #1 I plan on aprox. 200-300 to refugium, and the other 1400-1500 gph
back to the return part of sump. with pipe #2 600-700 gph
through skimmer and 1000-1100 gph
going through carbon and live rock is this fesable to run this much flow through my sump? or does this even make since? By the way my sump is 125 gallon. with the refugium on one side the mechanical on the other and the return close to the middle.