Distance between plant and light

Discussion in 'First Time Marijuana Growers' started by sd_dscheese, Mar 21, 2006.

  1. :eek: jk.
    anyways, I have a 400 watt hps and i want to get maximum use out of it my plant is about 12inches tall.... how far from the light should my plant be??? its about 17 inches away now, i dont want to cause a fire either... help out a confused person...

    By the way... this is reallly stupid.. and im gonn get ragged on for it, but can you put a MH in a HPS ballast?
  2. HIGH All, welcome to The City sd_dscheese...17' is good..of coarse the old hand on the HIGHest leaf and it gets hot yup too close. Some may rag on you but yes it's called Conversion Bulbs...google it.
  3. Why doesn't everyone get a MH/HPS switchable light? It's barely more expensive and the results I think would be well worth it.

  4. Hey Unoit,
    I thought that a conversion bulb had to be used with a conversion ballast. I did not realize that you can put a conversion bulb into and HPS system. Thats great. I learn something every day. Thanks as always man.
  5. ya unoit is right...just stick your hand at the top of your plant...if it burns back em off...if you cant feel the heat bring it a little closer...u want ur hand to feel warm.
    also, you can get a conversion HPS-MH system. where all you gota do is flip a switch on the ballast and change bulbs...get invention!!

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