"I highly recommend the Green Killing Machine. The results in my aquarium were seen in 24 hours with the water becoming crystal clear and staying that way.
I feel like the fish sense the difference"... (read full reviews)
"After using a number of Ultraviolet Filters over the last decade, this one is great if you have a Biocube tank. It sits in the back filtration area and is out of sight. It also nicely keeps the water"... (read full reviews)
"I have been using a Coralife UV for a while now and am happy with the results of keeping my water crystal clear. Previous to this I would get a bit of a green tinge from free floating algae. What many"... (read full reviews)