Once fished a small pond in Land o lakes just north of Tampa. Daylight I caught nada. Dusk I caught a few just before time to leave. Returned later to night fish with a coleman lantern. I had rigged a pole to hang the light on and had that thing pumped up as high as my fingers would allow. I lite that lantern and got it going bright as possible. Set out my lines with minnows and NOTHING. Water was clear with a dark bottom, don't know how deep. Idea entered my head about too much light, so I turned down the lantern to a nice glow and started catching fish. Taught me a lesson. If you think fish are there and light is bright and nothing chewing, try lowering the candlepower. It might make a difference. Yes you can have to much light.
Wear your PFD!!!!!
This is the day the Lord hath made, rejoice and be glad in it.
Psalm 118:24