I'm not sure about the type of CFL as far as light spectrum goes for that bulb. But do know thats not the watts you want it really watts is 20 not 75. 75 is just the energy saver you cant go by the 2nd number which is the energy saver number. You should go for the higher watt bulbs they have. Just wait for more input to see what people say about the whole CFL thing. Go on turtles thread and ask him I pretty sure he knows alot more about CFLs.