Yup! The coil-shaped compact fluorescent bulbs emit very strong rays that cause baby tortoises' eyes pain similar to snow blindness. If caught soon enough, the baby will recover in about a week. If not caught soon enough, it causes permanent blindness. Once "they" discovered this fact, the manufacturers corrected the problem, however, the bulbs were not pulled from the store shelves. So one doesn't know if he's bought a new or an old bulb. I like to use the Mercury Vapor bulb for UVB. Or you can also use the tube type fluorescent bulb. But the Mercury Vapor Bulb (MVB) puts out UVB and heat, so you only need the one bulb for daytime.
MVB:
TUBE TYPE UVB:
But with the tube type, you'll also need a heat source.
MVB:
TUBE TYPE UVB:
But with the tube type, you'll also need a heat source.