Well I thought it was the light fixture because. When I put the voltmeter to the hood of the fixture I was getting a reading and when I unplugged it I was not getting a reading. I was putting the probes in the water and the hood, then when I unplugged the light fixture I would get no reading. As it would turn out that was because I was unplugging the ground, which makes sense, so after calling the guy from aquatic life an *** , he told me what was going on, but my probes were not long enough to go I to the ground of the outlet so I still used the hood of the light as my ground and started unplugging things 1 at a time again, turns out it was a crack in the glass in a heater. Lesson learned. Lol