I have a Reef Octopus DBH300. I don't like the thing, didn't come with set up instructions or anything. I am going to attempt to pull it out and do a vinegar water cleaning on it to see if that makes it run right. But currently it only pulls out one half of the cup (if that even) every 3-4 weeks. It decides when it is going to actually put bubbles into the chamber and when it isn't. So far I hate the thing.