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    Keeping HPS lights cool

    I just bought 400 watt HPS/MH light system and I was thinking of putting a 16'' or 20'' fan right beside it to blow cool air at the bulb so I can put it as close as possible to the plant. Have anyone did this before and how close do you think I can get without burning the plant?
  2. I

    how to get 1lb.+ per plant

    I have 6 plants I want to grow in a hydroponic system and I want to know how much light do I need to get a 1 lb. or more for each plant?
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    Question about MH and HPS Lights

    If you use 400 watt MH about 36,000 lumens or 400 watt HPS lights about 50,000 lumens, I know they get hot and you have to place them about 18'' away from the plant, I wanted to know about how many lumens have you lossif you place them at 18'' and 24''?
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    Growing Hydro How much yield should I expect?

    I have a 15' length x 10' wide x 7' tall storage house and I just bought: 10 gallon reservior with water pump and air pump inside that can fit 6 plants 200 Watt CFL that puts off 12,000 lumens PH adjuster to keep the ph level between 6.0 and 6.5 Grow and Bloom nutrients to feed the...
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