William Posted September 21, 2016 Share Posted September 21, 2016 Sorry for the loss and beautiful set up! what is the square piece in the plumbing and the chamber above the sump? It adjust the flow rate to the sump, so that you can control the water level in the overflow box Link to comment
North Borders Posted September 22, 2016 Share Posted September 22, 2016 It makes for almost fully silent overflow. When my tank is running it's 100% silent (minus my huge skimmer, which you can just barely hear through the cabinet) Link to comment
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