I need to change the bulb in my pool light. However, I'm having trouble determining what one to purchase. First off, do I really need a $200-$400+ "pool light" bulb? Or could I use one of the substantially cheaper wet-rated LED flood / recessed lights? The fixture seems to have the standard edison style, so any normal bulb would fit, and LEDs are wet-rated and should run cool enough to survive in the enclosure I think. Additionally, how can I tell if I have a 12v or 120v socket? The fixture is so old that all the labeling has worn off, and the bulb exploded in my hands while I was messing with it, so there's nothing readable there. Is there anything else I need to be aware of?