Oh wow okay....I'll definitely look more into that for sure! Thank you!! So if I did use that can you use it along with gfo? Or my carbon dosing? And when you say run charcoal in my sump, you mean run carbon right? I have a brs dual reactor alreadyOzone is a water sterilizer and breaks down organic matter (waste) in the water as well, too much can be deadly so keep a bag of charcoal in your sump to remove excess o3, basically its like HD for fish tanks, although they can be pricey. I have never had anything on a tank that was more effective at removing nuisance algae. i battled aggressive string and macro algae in one of my tanks (350 gallon custom tank) and was just about to pull all the rock then decided to try ozone and within two weeks the algae was regressing after a month it was completely gone and the tank is cleaner than it has been in years with minimal effort.