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David7773
Since this topic has been raised here, perhaps experienced individuals could share their knowledge with younger brothers? What I know about such systems can be summarized in a few key points: 1. The overflow system must ensure the supply of water from the sump to the aquarium and its return. 2. The system should be designed with a margin for draining water from the aquarium to avoid overflow and "leaking" problems. Hence the conclusion: the diameter of the drain pipe should be larger than the diameter of the supply pipe to provide that margin. Problems: if the water does not completely fill the pipe, it creates sloshing sounds during movement, as the flow is turbulent. Solutions: 1. Precise adjustment of the supply - technically impossible. 2. Durso, Stockman, Hofer systems. I would like to hear about the latter from our Gurus.