My pool installer put in 2 fiber optic lights in the deep end of my pool facing towards the shallow end. They are installed approximately 1 foot below the water line. I'm not sure what brand they are but the photon box installed behind my diving board is rather large. Here is my problem, the lights aren't quite bright enough to suit me. I haven't checked but I'm thinking the bulb inside of the box is a 150 watt bulb possibly metal halide. I'm curious about whether this bulb can be replaced with a higher wattage bulb and if they even make a higher watt bulb for this application. Thanks for any help or suggestions.