Some bulbs are expensive. Try these instead: Grow Lamp, Grow Light Bulbs, Plantmax, Hydroponic, Horiculture, Plant Light Bulb
Only going to fit in specially designed reflectors . Make sure to check if your reflector is design for this type of bulbs before you buy them .
So I need to buy a different reflector for this bulb? It looks just like all the other ones that I have.