my tank is not drilled and i have been slowly working on getting an overflow box and sump and return pump now its time to start plumbing and i am wondering what size pipe i need ...the head height of my tank is 6'6" give or take an inch the overflow box is drilled with a 1" already my return pump is an ehiem 1262 310.. so if i use a 1" for overflow what would or could i use for the return? 1/2" is what im hoping
thanks in advance
thanks in advance