u can buy 6 cfls on ebay for $30, they give u 3 gorw and 3 bloom. i am gettin these for my grow box im building, it will have 6 grow bulbs, then 6 flowering bulbs when they start flowering, and u save on electricityfor yield of a plant with cfls more light means bigger yield. as for flowering with them you definatly can without a doubt. just have to you more softwhit light for flowering and mor daylight for veg