I have a 150 gallon tank that has been established for over three months now, with 24 hybrid bluegill. I had to reduce the temp by 2° over several days. From 75 to 73 degrees F. I did this because I felt my lettuce was bolting, as It was growing tall, but no flowering. Anyways, my gills have slowed down their eating, and some seem to have stopped all together. There is plenty of airation. PH is f…