J JW65 New member Apr 16, 2011 #3 My 1 inch overflow says 600gph. I put 600 into that little calculator and it came out to be about 1 inch
My 1 inch overflow says 600gph. I put 600 into that little calculator and it came out to be about 1 inch
das75 New member Apr 17, 2011 #4 depending on type of drain, potential a lot more (see the calculator on Beananimal's site)
