Hello ~~ everyone , I m just new for growing MJ with CFL lights, the introdution from the CFL 's box said , 6500k 24w / 125w output ? what is this exactly means ? means i use 24 w energy to produce 125 w light power ? it says , 70 lumens per w , so i shud court with 24 w x 70 lumens or 125w x 70 lumens ? I m very confuse about that now , cause i just bought four of them , use them in a 40cm x 40 cm x 60 cm grow box, is that enough light for growing ? please help !!!!