new grower question

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Originally Posted by polskatrawa

thank's for the advice :thumbsup:
i just bought 400 HPS with MH conversion bulb :dance:
i think i got it pretty cheap at insidesun.com (are they reliable?, hopefully)
i will transplant the plants when it comes in
will try to make some pics so you can all see it

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I just received my package from insidesun.com it only took them 6 days to come in (with the holidys)i am soooo sight. :dance: :dance: 400 HID both MH and HPS
well i hung it 20 inches above the plants which are now about 4.5 inches high with the fifth set of leaves :thumbsup:
is that high enough or they should be lowered?? or raised up ?
i've heard 24 inches above the plants is good but iam not sure
i have the fan blowing inbetween the plants and the light for cooling and air movement
hopefully some pics tomorrow

Hold your hand just above your plants and lower the light untill your hand gets hot. You can lower a little at a time. If you can hold your hand there for a minute and not burn then that's it. For every inch too far away wastes lights lumens and that is where the power is at.