Quote Originally Posted by Zandor
Lots of heat there....I assume you are only lighting the tops of the plants and not using it as enhanced side lighting. You may want to think about 2 600 and save the extra heat. Make sure you use air-cooled hoods or cool tubes and install Mylar on all walls, the door and ceiling. Monitor the temperature under the lights at the top of your plants and don't let it get to hot on them or you could have major problems.

how much light is too much for 10 plants in a 4*5 closet. meaning what temperature will the plants start to burn and how high should the light be from the plants?