I am building a new sump and have a couple questions that I cannot seem to find a clear answer on.
My Dt is 55 g and not drilled so I am using a CPR overflow with a 1" bulkhead which I've read will yield 600 gph
. I bought a mag 7 pump and the head loss is 4.5 feet which per the box will be 450 gph
. Then there will be a t, a couple elbows, a ball valve and a union which will all decrease the flow rate a little more, maybe another 100 gph
1. What size plumbing should I use for the return? The pump has 1/2" outlet but I was thinking of using 3/4"
2. Should I decrease the size of the drain line to 3/4" instead of 1"? Does it really matter what size the return line is with a HOB
overflow, will the return flow dictate the drainage flow? I guess what I'm asking is could I have a situation where my return pump cannot keep up with the drain?
Oh and I will have a skimmer in the first chamber which is rated for 125 g not sure if that will make any difference.