I have a 180g display in my living room. I'm building a 75g sump in my basement. I'll have about 12' of vertical pipe and 10' of head. I was wondering if a mag 12 would be strong enough and what size return pipe you guys recomend?
No, i dont thing a mag12 will pump that kind of head. You need a good pressure rated pump.
Im not the plumbing expert, but i would go one size bigger then the pump you choose.
I've got a Mag 12 on my 75 and its only pushing 3.5 ft into a manifold . I run it wide open and it won't keep up with my 1200gph overflow, also remember you only get a 3/4" outlet so between that and head loss your situation will demand a pressure rated pump.
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