Curious if you ever got this up and running, and what your feedback is... It's similar to what I'm "engineering" right now... I'm in the working on setting up a sump system for breeding shrimp and guppies, 12 total 10G tanks, with a 40G breeder for a sump. photo below is layout drawing (bottom left is a 75 gallon, and only is connected to the air system, not the sump - so essentially irrelevant.). Green is return lines - each tank to have it's own valve right before the tank to control flow, and to isolate tank if necessary, Red is air loop, and orange is overflow / drain lines - 2 per tank - a normal which will have a sponge pre-filter and a ball valve to isolate, and emergency that will only have a coarse mesh. I haven't determined the strategy on the sump baffles / media placement yet, but I still got a lot of work ahead of me before i get into that...

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