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bloom spectrum

  1. R

    Best time to begin using the bloom spectrum

    Hi All! 2 weeks into my 4th grow. I recently got a 400w Meizhi led with veg/bloom switch. At the wall with both sections on the light draws about 172 watts that breaks down to 116 - veg and 56 - bloom. When should I start to use the bloom? Before changing the photo period or when the photo...