I'm building a 46 gal
bowfront reef tank. I've got an eshopps pf-800 overflow (800gph), into a proflex 23 gal
sump. The return hose will be 3/4". Now for the question. I should be looking for a return pump that should put out around 700 gph
at 5' head. 5' is from the bottom of sump where pump will be to the return nozzle. Is this correct? I know i don't want the pump to be more than 800 gph
or it will fill faster than the tank will drain. Right? Next question is can someone recommend a good pump brand to look at? From what I understand you want the return to be as closely matched to the overflow withou going over as you can. Also one more question. Typically the manufacturers will tell you the head at 0', 3', 4', 6'. How do i know what the head would be a 5' since they don't list that height because the gph
don't seem to be linear between the heights i.e. The difference in gph
from 0' to 3' is not the same as from 3' to 6'. Thanks much for any info you can provide.