Ritual Blaze: the wattage is the amount of electricity they use, (voltage divided by the amperage draw= watts). What you want to be concerned with is the color or wavelength of the light being emitted by your lamps. That's usually stamped somewhere on the white base of the light. I'm assuming you're using curly-cue CFL's. We veg under 5,000K to 6,000K blue grow lamps for 16 hours a day and we flower under red 2,500K to 2,800K lamps for 12 hours a day. You can find them almost anywhere. Even the 99 cents store carries some. Look for those numbers and make sure that you're hanging the right lights over your plants for the correct growth stage. Try to do it right. Before we learned a little about florescent lighting we just hung T-8's about 6" to 1' over them, with what ever bulbs they sold us at Oley's, and I'll be damned if it didn't work. It's not rocket science so don't stress but you might want to pick up a copy of Cervantes' book or Resenthal's. Good luck. I hope this helps. HSA