I am going to connect two sumps directly to each other with 2 2in bulkheads. One is about 8in higher than the other one. Top sump will be for filter sock/media, sump, heater,and reactors. That will feed into the lower sump which will be a big ole fuge and the return. Any advice or must haves for this? 2 20gal sumps for a 93 cube...
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