Good, but has a slow drip/leak
The siphon works great in my fish tank aquaponic setup.  The only problem is there is a slow drip on the trap part of the siphon(same as videos people have posted). I had to cut a hole in the hood of the aquarium so that the drip falls into the water below the grow bed. If I was not in a rush to set the system up I would have asked for a replacement.
Rating: 3 stars