i say one for each plants, but you need 2 types (one for veg and one for flowering). You need to see the K number (temperature), you want cool white or daylight (5700K) for veg and warm white for flowering (2800K)....
johnnypants Reviewed by johnnypants on . need info asap hey guys i keep reading and cant find much about the general purpose 42 watt cfl's=150 watts"from wal-mart" put out 2k something lumens i may be wrong..i read one short post saying it was good to use for flowering is this correct..im going to be growing auto ak X auto blueberry..only 3 of them in hopes of male and female to make babies...i plan on buying 6 but if i can use less im ok with that im not looking to get some power smoke out this grow mainly just seeds..the smoke is a bonus Rating: 5