We had our pool replastered about 2 months ago. Over the last few weeks I've noticed something on the interior of the pool light which looked like rust (really don't think it was there after the replastering). Anyway, now our pool light is not working. I'm pretty sure it's the bulb since I don't know how old it is. How do you replace a pool bulb? Do you need to drain the water down below the light? Is this something we should call someone in to do? We have no idea.