Rated 4.6 out of 5 by 114
Rated 5 out of 5 by kbickhaus Wow!
75 gallon tank suffering from milky water for weeks. Used clearmax and zeo-carb, water clarifier, and algaecide and none had any effect. Water testing came back perfect. I suspect it was bacterial. I bought the smaller version rated for only a maximum of 50 gallons and the water was crystal clear in 24 hours. I wish I had this from day one. Worth it.
June 28, 2016
Rated 5 out of 5 by BSMS77 green killing machine
it really works,50 gal.tank,24 hrs.now l can see my fishes.
November 3, 2015
Rated 5 out of 5
by ElvenArtist I have a 55 gallon tank, have had no real problems for about 3 years, then suddenly super mirky water, kept up with water changes, even tried some chemicals, nothing worked. I purchased Green Killing Machine, pretty much just plugged it in, very easy to use, a week or so later, the tank is clear again!! Highly recommended.
October 17, 2015
Rated 5 out of 5 by ERNIE86 works great
I recently bought this uv light for my 40 gallon tank and it worked great. The water was cloudy and after a few days the water got crystal clear.
October 9, 2015