First of all, the CF stands for Compact Fluorescent. If the twist bulb you have is soft white, that is a yellowish-white light much like a regular incandescent bulb then it should be the right spectrum, I wouldn't waste my money on the colored ones. What you should do, in my opinion is get a couple more of these twist bulbs, and position them close to the bud sites, I have found that they can be as close as 1".

Hope this helps..

L0rdsOth
lordsoth666 Reviewed by lordsoth666 on . Lordsoth666 Please Help!! Hey I appreciate all the info you have been giving me I just had a few questions for you. Here it goes. I have seen compacts that are colored. How do you think it would work to get a red one? Also what does CF stand for?? I have a westinghouse twist bulb 23w 120v 60hz 370mA. Can I use this bulb or should I have something else?? I currently have a 60 watt grow and show bulb from G&E It looks blue so I am assuming that the light spectrum it gives off is blue also it worked great for veg but Rating: 5