I use 4 foot floro tubes to veg seedlings for the first 1-2 weeks. 6500k tubes would be better. I can fit 10 seedlings in 4 inch pots under the light. I keep it within 2 inches of the plants.

Then, I transplant to bigger pots and put them under 400 HID light. The 600 HPS is probably the best single light on the market for a small personal grow, as long as you can deal with the heat.