Thanks Rex. That's the kind of answer I was looking for.
After several days and nights of single-digit temps the pond is quite safe to walk on.
I'm going to cut a hole in the ice today and dip out a bit of the liquid stuff that's underneath for a jar test.
The de-mucking and cleanout was thorough. There's not a trace of nasty odor to the water.
Then the grey may be Lime dust from all the ag lime you added....the jar test will let you know what works best.
Be really careful on the ice. I installed a 250 pound grate over an overflow box today...Ice started at 6 inches at noon and was down to 2 inches by 4:30. My foot slipped through a hole in the ice along side the overflow vault...I was already holding to solid structure since I was on top of a 16 foot depth...could ruined my whole afternoon! Wait till the 70 degree temps come Sunday and let the water mix before gathering your jar test
