I have about 100 Electric Blue Cichlid fry, about 6-7 months old, was very healthy, and starting to show colors... I woke up this morning, turned the lights on, and found a few dead on the bottom of the tank... I removed them and then watched the others swim. Some were moving in strange, whirling motions, as if twirling in the water. Clearly they were dying. No visible signs of ich, or any other disease. They all stayed grouped up on the bottom of the tank, and this is unusual, because they are always swimming all around the tank. I tried feeding them, thinking that they were hungry, but this time, they had no appetite; this too was abnormal, seeing as they eat a LOT! I added a PH increaser the other day, and I think it could either have been that, or the fact that I added 3 Crappie minnows to the tank about 5 days ago...? they too were found dead this morning, with white cloudy fungus around their severely decomposed body. What do I do??? I have been given offers for all of these poor fish, and I already lost about 15-20% of the fry. Please help! I need advise, and fast! I appreciate it.

