That's a good point. The only reason that I thought it might be tough as a sump return is that it would be a ton of water for an overflow to handle and a ton of water going through a smaller sump.
I guess in a closed loop you would have to probably split the intake into two pipes, maybe one in each corner, and have a threaded screen in each intake... you're right though, that is a lot of suction to have in one place...
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Returning to the hobby after an eight year absence.
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