I've got 4 types of peppers growing in 2 heated indoor tents. Soil and NFT. The best results that I've got are to start the seedings under 2x55W long CFL bulbs until they start to flower, and then transfer them up into the upper tent area where there is a 430Watt HPS bulb with 58000 lumens. The Tepin peppers flower in incredible numbers. The Jolokias make tons of flowers, the Cayanne peppers don't care, and flower and make peppers under almost any light conditions as long as they are getting 18 hours of light, and the Chocolate Habanero's are 3/8 " thick, leafy, and flower like all gettout! Temperature is regulated at 22-29 C, and NFT is used with GHE nuts. Soil is Cellmax, which is not good for germination, (too much peet) but once they are mature enough for the soil, CELLMAX is the king of soils and the peppers are happy. I'm very happy with 430 Watts of HPS with the NFT. I had to move the light further away finally, because they got a bit sunburned, but wow, tremendous growth and strong flowering. I recommend using HPS (High Pressure Sodium) (a bit in the red spectrum) for the whole growth cycle indoors in the winter. The new HPS + 5% MH mix bulbs work ok too, but I didn't see any need what so ever for the extra expense. A digital balast that can run at 200W, 250W 400W and then 430W was perfect for the whole thing. Next year I might go with the 600W setup just for the extra lumens at the end of the pepper cycle, where they like more light when they start to turn color and mature.
I keep daily EC and PH and Temp logs, and regular leaf size notes, and water changes when the PH becomes too unstable. That's what I've learned with the lighting. The more the merry-er . A 200W CFL for the wild Tepins does work, but the number of flower sites is much lower than under the HPS.
I hope that shines a bit of light on the lights for indoor winter garage peppers. Pics are available if someone wants a peak at the setup.
Hotty-Brown