Here's my system. Once in the morning, if I have time, I lift the cheato gently using the edge of a toothpick, feeding stick, chopstick, whatever and just do a head count and lay it back down. Then every evening I check them again to get their attention. Right after that I use a turkey baster to clean out the old food/waste in the breeder net while I thaw the frozen mysis. Then I add the mysis in a corner and catch some live mysis and add them last. My thought is they are watching me, but they've had a minute to calm down since I spooked them. And I do all this religiously, so they are learning to expect it. Seems to be working so far. They didn't like it the first 4 days but they pretty much don't care now, they just start twirling their tents and then eventually walk back under the cheato if it moved too far.