I got one from a company called Viaaqua. Its a multi-media reactor.
I placed Phosban media in it and it brought my phosphates to 0 in 3 days...No more algae, the corals look amazing.
The cool thing is this one comes with pump, hoses, everything already set up, and it only costs $50 bucks.
The pump is small and might only pump 50 gal
/hour, but that is because you dont want the water to rattle the media in there because then you wont be allowing the media to work properly. The media is supposed to gently tumble in the tube. If you do it too fast, your protein skimmer cup will be full of debris from the media, meaning its being dissolved unnecessarily in your water