Well it's my understanding that fluorescents are fine for veg, but for bloom you need to have a lot of power. I'd guess that those bulbs are fine for bloom if you use them all at the same time. I've got CFLs, but the powerful grow ones that range from 125 watts to 200 watts. My seedling is about a week old, and seems to be doing great under the 125 watt Hydrofarm. If you surround your plants with reflective mylar you can increase the light that reaches your plant quite a lot.