Good part with only minor weaknesses

Use the part for the purification of a nano-basin. I had bought the vacuum cleaner, so you do not even have to suck on the hose for the pump attached.
In principle, this part works very well and I displease some small things:
- The drain hose should be a little longer. My aquarium stands on a sideboard and the tube is just so until the bucket.
- The flap that prevents the backflow When starting to pump, sometimes does not close properly. You have then a few times knocking against the nipple until the flap moves back and closes.
- Even if the drain hose with the enclosed terminal is maximum closed is still quite a lot of water.

But as I said: Everything just little things.