I don't know how long he has been using it but I will ask. Not sure what places would ship the pump to the US or if it is even compatible with us outlets/voltage, but I plan on looking into it. The same website I found the pump on also sells the replacement tubing. KZ also sells both but more expensive. I don't know how quiet it is in person but it's running in this video and I couldn't pick it out over the water from the drains:How long has he used this pump?
Where can you buy replacement tubing?
Is it quiet?