Hey Whitetop,
I have grown indoors with 3 CFL's before, it was a sativa plant, and it became to tall too light in the end. The buds were very thin and feathery, not much yield. The main problem with CFL's is when the plant is flowering it needs higher red spectrum light. Blue light, which CFL's give off is excellent for seedling and vegetive stage. It will help to develop root systems. One light won't work very well for 2 plants once they get petty established. It may work until you can get more, and reflecting light of a flat white surface is your best bet. Did the last plants stretch out a lot before they died? There are specific CFL bulbs that emit red spectrum you may want to look into

http://boards.cannabis.com/closet-ca...ml#post1308074

http://boards.cannabis.com/closet-ca...ml#post1412072
Good Luck!