Quote Originally Posted by Alfiecarted
I read a whole book on growing before doing this
It wasn't a very good book if it suggested a 400w MH light was good for seedlings.

Quote Originally Posted by Alfiecarted
So what ideally should the distance be between the mh and the plants if either of you guys can help?
You have the distance about right for a more mature plant, but if you want to waste all that electricity and use your 400w MH for seedlings then the distance should be around 4-5ft. But I really would suggest investing in CFL lighting for the seedling/cutting stage. I am talking about $10-$30 which will pay for itself in no time at all.
PhatJay Reviewed by PhatJay on . Problem with seedlings? Can anyone help me to identify problem? I grew last year outside and had a very successful harvest so i decided to have a go at inside growing. The problems i am finding is the browning almost burning of leaves on the seedlings. I have the light at about 18 inches away maybe even more and it still seems to be burning the seedlings. I have a fan constantly on the circulate air and keep the temperature down. I am using a 400 watt metal halide light fixture. Can anyone suggest some ideas and will they be alright in the long run even Rating: 5