Ozonizer ET200 200 mg Suitable for Fresh Water and sea Water,can Work with ORP Controller

I think the best description I can say is WOW that thing is amazing I have a 75 gallon reef tank I ran it for about 1 hour just using a air stone nothing fancy, you could just look at the tank see it clearing it was sparkling clear water 1 hour seems to be good with out over doing it I had it set about #4, I would definitely buy again. also you wouldn't need to use it every day

Does the exact same thing as the big expensive units! Worth every penny.

Did not last 3 months.

I have been using these ozone generators for many years and they work well. The only issue I have is the cleaning should be easier. Maybe instead of those 4 small screws it could be hinged so maybe a clip or just one screw could open it because although I can do it with little trouble, I can see some people having a problem and they do need cleaning almost monthly as the tiny "pipes" clog up.Sometimes you can just insert a small drill without contacting the membrane behind it to unclog it. But eventually you must remove that end piece to do a more thorough cleaning. It is difficult to position those small screws while keeping the "O" ring centered.I am an inventor and could make it much more user friendlier.

Besides needing an air pump this is performing as needed

It works great.

buy an Enaly unit for slightly more. i can't even recommend this for someone to try out ozone. it does work, but clogs in a few days with nitric acid crystals/dust unless you run an air dryer.