CFL's usually have their actual AND equivalent wattage listed on the package or ballast. If all it says is 250w, then it is probably actual watts. If you still aren't sure... try to find the manufacturer website. They usually will have a bunch of info on particular bulbs. I have no experience with high wattage CFL's but I'm guessing they are somewhat similar to their smaller 26w cousins. Since you have a decent size tent, the CFL's will have to be harnessed to maximize lumen output to the plant canopy. Basically, you will probably have to keep moving them up and down to keep them as close as possible. The best way to avoid that hassle is to LST the plant. That way as the plant grows up INTO the lights, you can tie the branches down to where they are in perfect position. Just throwing a few CFL's at the top of the tent a few feet up is just going to encourage stretching. Also, figure out your "Lumens per square foot" if you are concerned about your total light power.
Total lumens divided by Square feet = Lumens p/ sq. ft.
Anything really above 4,000 is considered adequate for normal growth. Of course this is only relevant IF you keep the lights just close enough that they provide USABLE lumens to the plant, but without burning the it either.

Some recommend including red/blue spectrum in ALL stages of growth. I would say that, as long as you have a majority of the red spectrum, you should be graaavy :hippy: People do fully flower in the blue spectrum, but results have been shady. Keep in mind that, as long as heat is not a problem.... MORE LIGHTS = MORE BUDS! So adding any additional lights is going to benefit the plants.

The DIY Carbon scrubber is really simple to make and can be assembled for fairly cheap compared to pre-fab models sold online (saw one the same size as mine for over $300... mine was about $40 maybe?) The only concern with a scrubber is you REALLY can't slack off on the fan. Those in-line duct booster fans are great for ventilating small areas... but with a scrubber attached it's about as powerful as a cold fart. You may want to research ALL the different odor control remedies if you don't have the funds for a decent fan. And no, a clip fan is most likely not going to work well. You have to remember that you not only want to have air flow... you want air EXCHANGE. No sense in re-circulating stale air, so having an intake source for fresh air and a dedicated exhaust to pull air THROUGH the grow space, is CRUCIAL. Otherwise, you run the risk of mold or bud rot. It would suck to spend your last few bucks on all this equipment and have your crop get sick and die.

Hope that helps a bit :jointsmile: