There are no single cfl lights that go up to 600w
Pretty much what I speculated in post #31.
from what i can see in your pic its chance to be a 300w or at max 340w
I figured it was somewhere around 200 watts, IIRC. I didn't know they made 300- and 340-watt CFLs. Seems like those relatively huge CFLs are inefficient due to the shape (part of the bulb would block the other part's direct light transmission, wouldn't it?). Several years ago, I had some larger-wattage CFLs. They were not as high-wattage as those, though. Still used "household-sized" medium sockets instead of the mogul ones that the largest CFL bulbs (and the vast majority of HID bulbs) use. It had a more open structure:
...but still appeared to be "self-blocking" to a degree. Therefore, buying - or making - some kind of decent reflector would appear to be very important. The bulb on the right is a standard 23- or 26-watt CFL, used for scale.
A 400-watt HPS blew four of these out of the water in terms of production (for about the same cost in electricity), and the grow room was cooler with the HPS, too, lol. Probably, since the gross wattage was comparable, because the HID's ballast was outside of the grow area, whereas the CFLs' ballasts were attached. I did try to separate them from the actual bulbs (which is technically possible to do with CFLs, but probably not worth the hassle when one can just go buy a HID instead of a bunch of CFLs), but had a "little" accident :icon_roll . Especially if the goal is heat-reduction in the grow room, since air-cooled reflectors are available for HIDs (I suppose they could also be used for the large CFLs, but, again, why bother?).
it will say on the bottom of the light the lip before the tubes come out.
It ought to state the information on the package as well. Ignore anything that states "equivalent," since this is in reference to the old-fashioned, traditional incandescent light bulbs, which have NO place in a grow room (cannabis or otherwise), anyway.
Into some black magic hydro soil
Er... Hydro(ponics) or soil, lol?
Regardless, I really dig it. Not the product (which I have never used), but the package:
It would make a nice t-shirt .