Two and a half weeks ago I seeded some lettuce in a float tray under a 4′ florescent light in my basement. About a week ago I added a second light with two Phillips ‘Natural Sunshine’ bulbs. The first light had one cool white and one warm white bulb. The hardware store I went to had actual grow bulbs but they were about $10 each as compared to $5 each for the NS bulbs. I have a third light I can add but I need bulbs for it. I think I’ll go with two more NS bulbs as the plants are looking good and developing color well. The two rows uner the light with the warm/cool bulbs seem to be leaning toward the NS bulbs a bit.
I am not really happy with the soil I chose for the tray. I needed something lighter. It stays a bit too wet and I had a problem with some damping off early on. The remaining plants seem to be doing fine though.