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Thread: UVB/Cannabis science report

  1. #141

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    UvB is great for preventing mold. On that experience alone i use a 55w 15% t5 UVB light 12/12 throughout n have no mold issues. For several grows before the light i had mold at end of the grow. Im still using same clones too

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    GEORGE (01-08-21)

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