Use the thermometer god has conviently installed in the back of your hand. If it gets too hot when holding right at top of plant and between light, then too hot for plants. Plus watch them closely when you move light closer. Not hard to tell if they are happy or you are baking to a fucking crisp.

Get a fan blowing upwards between light and tops of plants, can control heat that way, too. Allows light to be closer.


b0nger