Coralife Calcium Reactor
 

Has anybody used these calcium reactors and how good are they? I am looking at the one that is rated for up to 250g. Do they have any problems?

read of people having to deal with leaks springing frequently. There's nothing really around that price range though. I'd say run it in a sump and be prepared to "fix" it when needed.

I have one...I use on a 72g/33g sump. Never had a problem except for adjusting the bubble rate at first ....