Running closed loop from sump?
anyone know if this is possible? i have a sump with a bulkhead fitting in my return pump chamber with a ball valve right now i wanted to run a closed loop for more flow wondering if this is possible or if i would have to drill the tank. let me know what you think heres a pic

bottom right
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35gallon, skimz 181, aqua controller l3, AI sol blue w/ controller. reef to be
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