Tank Net and Air Conditioning

I ordered a nylon net to stretch across the top of the tank to prevent fish from jumping out. I installed that yesterday. The two air conditioning systems in the room are struggling to keep up with the high temperatures, they both now need to be reset every few days to keep cooling. The summer campers have collected some stuff and put them in the tank, but a lot of the stuff is really small, like pipefish, and they are either being sucked up by the filter or aren't staying alive.