Gavinsredseareefer July 19, 2021 Share July 19, 2021 Fellow Reefers, I am trying to run 2 COR 20’s from a basement to the top floor but having challenges. Anyone run two pumps in a sump and can I see what your plumbing looks like? I am getting one to work but the other isn’t because the 90 degree turn isn’t functioning as expected. Many thanks Link to comment Share on other sites More sharing options...
Saltcreeper July 22, 2021 Share July 22, 2021 I run 2 m2s but only sump to tank and sup through uv...so probably won't help. Let's talk head pressure and how far you're trying to pump that. Cors ain't what I'd call " strong pumps" Link to comment Share on other sites More sharing options...
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