I gotta dissagree with the kiss principle and running a feed pump. I have my pump gravity (suction) fed on the same level as my sump and its flawless and never deviates from being so.
Kiss IMO is running a reactor with only one pump for recircualation and having it do all the jobs rather then running 2 pumps.
Just another opinion.

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No matter what the morrow brings, inventors keep inventing things.
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Jonathan
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