How far away is your light ? and how many plants have you got underneath it ? With cfls you need to get as close as possible. You can have them just over an inch away if you have got a fan spinning around in there. As a test put the light lower down and put your hand on top of the leaves, if its not burning your hand or feeling too hot it should be fine for the plants. Also i have grown with a 300watt cfl and the plants absolutely loved it, you could invest in a bigger bulb if you have the money. Good luck :rastasmoke: