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Green Killing Machine

Turn green water into clear water in days without any chemicals. 

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 free flowing bacteria, yeast, mold and other pathogens, in turn clearing up green water without any chemicals. 

GKM 9W & 24W video

Mini GKM 3W video