John, I called DURO-TEST, 1-800-buy-duro. They sell direct if you need them to. They wanted $18 for the 3 footer, but they also sell the vita-lite for a couple bucks more then the local lighting distributer. Anyone who caries VITA-LITES should be able to get them. I think they will be very bright, and the spectrum looks ok to me, but I'm new at this!!