I have a light bulb fixture that's not mounted in a reflector hood, it's just basically the bulb. I wanted to place some tinfoil around it so it will reflect more light into the tank (planted), but I'm worried that there will be a problem with water evaporating, getting onto the foil, and pouring into the tank. I have a glass top that covers it completely, am i in danger of some water getting around the glass and dripping in?