I'd agree. When I had my betta in the community tank I fed a little with the lights were on...wait a minute or 2...then turn the lights off and feed a little more. When the lights were off, the other fish didn't go for the food as much, giving the betta a chance to eat. What he dropped, the pleco picked up(since he only comes out at night).What kind of fish are you trying to feed? A few fish are more active at night than in the day, but most fish feed during the light hours.