Move light as close as possible without burning plant. Ideally it is an air cooled hood, or you can use fans to keep the air flowing between your light and plant. Use the back of your hand test. If the back of your hand burns when at height of plant, then its too close. The idea is to get light as close as possible, but keeping the heat from harming your plant. Fans and ventilation are your ticket to remedy that.

Might want to consider getting a HPS conversion bulb for the flowering stage. Just a thought.


b0nger

P.S. Here is a link that might help out.

http://boards.cannabis.com/attachmen...8&d=1148162259