I woke up this morning and noticed my snakes light has burned out I don't think I can get to the pet store today, so I was wondering if I can use a regular light bulb(like one from the grocery store)in the heating lamp? The lamp I have is a Fluker's 5.5" clamp-lamp, rated 75 watt/120 volt. The bulb I had in it was a Zoo med 40 watt. Can I get some kind of regular 40 watt for that kind of lamp?