I'm talking about the one in the middle of this pic.
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It looks like it is going vertically up to the tank. Is it just an odd angle?
right about trim level you can see the T where the water change drain is. I think you close the top valve and open the other one to use the return pump to drain the sump by opening the other valve to drain the skimmer chamber than the water runs trough the slits in the baffling baffle and you pretty much drain the whole sump and run your pump dry.
and you thought a MJ1200 and a house was all you needed!
