Needs a lot of flow to get it going.

Excellet fast,good quality, good seller

just installed today it fits perfectly and looks great hope it affects my flow rate as good as it says it will!!

The accelerator ıs good and useful. ıncrease the velocıty and my fıshes are happıer.Thank you very much

Been Running this for a few days and so far it seems very good,Theres a video of it here in Action

http://www.youtube.com/watch?v=XgJxAyCJee8

Great product which provides extra flow for such a small cost. It works excellent.
Only one thing, small parts of plants tend to get clogged in eductor, and then the flow is dramatically decreasing.
But all in all, I'm very satisfied.