Ya I know the high alk. and hardness helps temper the ph swings, but the high ammonia has me wondering?
My home sits on a large area of limestone with about 6" of black dirt over it, as far back as I could find this small 2 acre parcel has always been grassland but, there is cropland all the way around me within a few hundred yards.
The pond was dug out of the side of a limestone hill and burmed on the other. I hauled in about 1' of good clay and also tilled in 1.5 lbs. per sq ft of bentonite.
I had a serious water test done a few years ago when I started the lined koi pond, and besides the high Nitrate I have some Pesticides and Herbicides.
Travis
