Water Gardening: Any Ideas on What & Why?, 1 by MollyMc

MollyMc wrote:
This is my small pond, a field watering trough sunk into the ground in the winter of '05. I filled it with lots of oxygenating plants, some floaters and it is well established as a stillwater pond. There are 4 or 5 goldfish, smaller than 4 inches, some mosquito fish and a couple crayfish that hitchhiked in on some other plants. Maybe 1 or 2 resident frogs.

The lifeforms in there are fully self sustaining. I do not feed them.

This green silt floating on the surface has never appeared before. It showed up probably within the past week. We've had rain daily for about 5-6 days. Previous to that we had a couple weeks of dry days with high temps over 100 degrees. The temps are now down to the high 80's to low 90's.

The fish are still alive and the water is not foul.

Any ideas?