Rated 4.6 out of 5 by 113
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
Rated 5 out of 5 by thumpersmasher Worked like a charm!!!
It took about a week with partial water changes to be fully effective, but my tank water has never been clearer!!! The only recommendation would be for more thorough instructions concerning the care and cleaning of the unit as well as an explanation of exactly what it does and how it works. Small potatoes considering the fact that it saved my fish and kept me in the hobby-I was ready to "splash out" until my wife discovered this unit!!! Many thanks.
June 25, 2015