Good Morning Bill,
Thanks for the response to our frosted tank questions We discussed it during our morning meeting today. The heat was on when we came to school today and the tank was clear. We think your theory was a good one. Today the temperature on the chiller was 53 degrees and 51.5 on the tank thermometer. The ph level is still at 7.6. The ammonia level is at .25. The water is clear and at the correct level. Both the pump and bubbler were working fine.
Some of our Observations for today; an alevin was attempting to get of the egg. When one of our group members was trying to remove an egg from the breeding net, the net tipped and released some alevin into the tank. They swim quick and fast. Once it disappeared into the gravel, we couldn't find it. We thought the were about 1.5 cms long