How hot does a 30w cfl make a plant leaf at 2 inches away?
bumpHow hot does a 30w cfl make a plant leaf at 2 inches away?
put your hand under the light or a thermometer
so if you feel heat comming from the light onto your hand its to hot?CFLs dont usually get too hot
the hand test is a good rule of thumb to how far away to keep the light
your grow space should not exceed 90 degrees