I just set up one from 2 little fishes seems good so far its made well and easy to install it hanges on the back of my sump. You just need a little pump and some 1/2" hose. it comes with a valve to adjust flow rate.
How do you guys change the media in your reactors? I'm finding it to be a real pain to swap out carbon and gfo. To the point where I'm getting lazy about it.
What I normally do is save my old water and use that the rinse out the media by running the reactors in the bucket but it usually becomes a messy situation. Is there an easier way?