Return line size
If I am using a Mag 9.5 to return water from my sump to my DT, should I keep the line at the same size as the pump’s outlet? A Mag 9.5 outlet is 3/4", but I will be using a 1500 glass-holes overflow which has a 1 1/2" supply line. Just curious to see if the need for 1 1/2" on the supply vs. 3/4" on the return is b/c the supply is ran by gravity and the return is pumped? Thanks for your help…