Hello everybody. It has been a while sence I visited this forum, not because it isn't a great forum, it's just hard to get a definative answer sometimes. Sometimes you get conflicting answers to the same question. I have a lot of videos that I learned a lot from, but even then there are different tecniques depending on the grower.
Anyway.
I figured I'd test this thread myself to see what I could do with CFLs. I have been using fluorescent tubes for veg stage of growth the entire time I have been growing (only 3 years) with no complaints. So, I figured I'd give fluorescents a try for flowering. I have previously been using a 400 watt Hydro Farm HPS with two 70 watt HPS street lights, one to the left and one to the right of the 400 watter (540 watts total). My current grow (to test the ability of CFL) consists of 8 x 68 watt 2700k CFLs plus the two 70 watt HPS (684 watts total). So, it isn't entirely a CFL grow, but it gives me some idea of how well CFLs work compared to HPS alone. My findings so far are that it is defanetly easier to grow with HPS alone, only because I have to move the CFLs around pretty much every day. The CFLs do not make any difference as far as grow room temps are concerned. The heat source is dispersed over a larger area, vs having just one main source of heat, but overall temps in the room are about the same (between 75 - 85 degrees). I'm only 5 weeks into flowering out of a 9 week flowering period, and so far it looks like the HPS has the CFLs beat as far as yield is concerned. To my suprise it isn't by much, the buds aren't as hard, but I won't know for sure until harvest time.
My Hydro Farm HPS was $250 for the reflector and ballast plus $30 for the bulb about $280 total. The 8 CFL bulbs totaled $132 from Home Depot, and 8 reflectors about $9 each comes out to about $205 total. So, starting cost for CFL is a little cheaper, plus I won't have to replace the CFLs every 9 months like I do with the HPS bulb. The 70 watt HPS street lights were $35 each, and bulbs run about $12 each.
I'll keep y'all updated as the grow progresses.