I would recommend doing 10K or 12K bulbs for freshwater planted tanks. They need to get about 10-12 hours of light per day. Overall, Halides are always best, but PC's work just fine as well. When I kept my planted tank, I had no problem with using just PC's. I would try to get around 4 to 5 watts per gallon. Anything less may be inadequate in the long run.