Yeah I had them for my first grow. They were pretty good because of the low heat and the odor control they give. They don't produce ozone though, that's just the name of them. I grow HPS now, much more light, but still love the ozonebulbs for their odor control and air purifying effects. Didn't know they are 60 each, I got them back when they were 45, still pricey though.