Ok I have three plants growing in a DWC setup that area about three weeks old. They have been under the 150 HPS light for three days. Before I put them under the light the roots were poking out of the bottom of the Rockwool. However, now they are drooping and the one in the middle just plain leaned all the way over. I was looking to see new leaves or at least some progress in three days.....am i missing something. Pics Below any help would be great.....
It your hand right above your plants...then lower the light till you start to feel the heat coming off of the bulb. That's where it needs to be. Right above where that heat starts. Watch the temp too...what are your average temps like?
Well I'm ashamed to say I'm not tracking my temp in the room yet. I will start now however. Thanks for the gauge on how to judge the right light distance.