It is a great product. I've used several of the others on the market, it was always the same, they would leak. The response was always, place them in your sump and it won't be a problem. unfortunately, I didn't have the space in my sump to place them there. And why settle for something that would leak. I decided to go with the BRS reactors and have since purchased more.
I now own two of the single reactors, One for GFO and One for carbon. In addition I also own the jumbo reactor.Great product and it works as described, and best of all, NO LEAKS. The ease of use is awesome, remove the interior cartridge and clean it out then replace the media and place back in the unit, Easy. I recommend them and you won't be disappointed.