This system is very high quality and robust. For me, the role of the automatic water change my 576l Aquarium serves. The whole system is close to 100% and works perfectly ... water is tapped from the laundry room, the aquarium is 10m further in the living room ... resonance? = 0 drops on the granite ... world-class ...
Turn off the tap, attach the tail drain ... draining ... 200l end to the tap, and 200l fresh water clean again .... It's that easy!
I would recommend every aquarist this system ... Unbeatable, is easier not hunting