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Green Killing Machine - Crystal Clear Water
Green Killing Machine - Internal UV by AA Aquarium

Turns green water into clear water in days! 

GKM makes fighting green water easier as it is an internal UV - that is, a UV system that you simply drop into your tank for a full UV protection. UVC radiation is effective in controlling water contaminants, in turn clearing up green water.  

* Controls Green Water

GKM9W & GKM24W video

Mini GKM3W video

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