"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)

Oceanic BioCube Mini Ultraviolet Sterilizer Reviews (6 reviews)Buy Now

Overall Rating:

"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)

Coralife Turbo-Twist UV Water Sterilizer Reviews (2 reviews)Buy Now

Overall Rating:

"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)