need help with lighting

Discussion in 'First Time Marijuana Growers' started by plast0ner, Nov 16, 2011.

  1. hey i was just wondering how far away a 150w mh light should be from the plants roughly, they only sprouted a few days ago so they are still tiny. also can anyone give me some advice or helpful tips on keeping the plants healthy and getting them to grow nicely? like i said they are tiny at the moment maybe 2cm haha. im a complete beginner as you can tell
     
  2. [quote name='"plast0ner"']hey i was just wondering how far away a 150w mh light should be from the plants roughly, they only sprouted a few days ago so they are still tiny. also can anyone give me some advice or helpful tips on keeping the plants healthy and getting them to grow nicely? like i said they are tiny at the moment maybe 2cm haha. im a complete beginner as you can tell[/quote]

    Um I would say since they are seedlings stage still I'd say about foot and half to 2 feet till they show signs of growth( makeing side branches and after that keep it close as possible. Is you light air cooled or anything if you have an air cooled ( or water cooled ) move it closer. This is what I used for a 400w MH/HPS set up but I have an air cooled hood. You might be able to go with a foot right now. In the pic I sent is a 600w MH sitting at about 1 1/2 feet from the cannopy. I'm sure I can move it closer
     

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  3. I used this info here on my first grow. I run a 1000W and I keep mine 12-18 inches away. 150 you might get away with 8 inches?

    keeping them healthy, good soil,good nutrients and the proper environment
     
  4. young seedlings can dry out very quickly. I'd leave it at least a foot or two away for the first week or two. i've had some seedlings dry out because of lights and it can seriously damage them.
     

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