I'll go over how you should be using it, and then I'll give you a few other things to try...
1. Make sure to fish the outside edges of the light...
2. Make sure to be in a location where you have caught fish in the past (it won't create fish where there aren't any, in other words - there must at least be fish in the somewhat near vicinity).
3. The top of the unit should only be about 2 - 3 inches under the surface - and you should be tying a weight to the bottom of the unit to keep it submerged vertically.
4. When you look into the water after about 20 - 30 minutes, you should see the zooplankton organisms forming clumps around the light...
5. Once this happens, you know it is working in that spot, and you should begin to see baitfish showing up to feed on the zooplankton. This swarm of baitfish will grow over time...and the game fish will sense all of that movement and hang out off the perimeter of the baitfish ball to feed.
6. If you have tried it in a variety of spots, it may be that the oxygen level towards the surface is not high enough for the zooplankton organisms. Try submerging the unit between 5 and 8 feet under the surface..
7. Try moving to a variety of different spots, give it about 40 minutes to an hour before giving up on that spot... It should be very rare that a proven spot does not produce a swarm.
8. If still nothing, drop it down and leave it in one spot for at least 2 hours...sometimes certain bodies of water take a little longer than others for some reason.
If none of this stuff seems to help, please contact us by clicking any of the support links on this page.