decreasing humidty in flowering.

Discussion in 'Growing Marijuana Indoors' started by tohighthree, Sep 14, 2009.

  1. how can i decrease humidity when flowering, i will be flowering with a 400W HPS so i know it puts off a bit of heat more than MH, doesn't increase in heat decrease the humidity? thanks.
  2. im not sure humidity is weird...ill be runnin my mh for 18 hours and humidity is at 35% when light goes off it goes up to 40..i guess it all depends on using a 171 cfm vortex in a 4x2x5 hut with a 250w... temps still go up and down when up, th higest ive seen was 90!!!!!!!! and humidity was still fine..
  3. yeah throughout my grow when the light was off the humidty was always higher and when it was on it dropped to around 60% normally, i think with the HPS on it should be ok, i might buy a small dehumifyer and put in my room, found one on ebay for like £4 posted.

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