Its seeing the floating stuff down that deep. Worms, plankton, mud, or whatever lives down there.
I havent had alot of success using my eyoyo down deep, it's good to about 50 to 60fow.
Also try adjusting the red light. I know its tough because it's a fine line between seeing too much floating crap and not seeing anything at all
I stopped using mine for deep water.
How long is your camera wire? Mines 80 feet or so.
