well I am pretty sure all my Alkilinty problems are coming from the fact that all my springs from underground run thru layers of limestone. They mine limestone in my area after they get the top layers of coal.There are no pines at all anywhere within 1/4 mile of my pond.This is also making my hardness come out very high at 300ppm which I have always heard is the #1 cause of hardness at least here where I live.I had been testing the springs only for the pond is & has been frozen over for the last few weeks. Just yesterday it got warm enough that the pond was clear of all ice & I did several tests & they came out very good from what I could tell. The PH & Alkilinity were right where I wanted them. 7.0 on PH. I guess the acid in the rain sure brings down the PH when the spring water hits the pond. I did several tests at different locations in the pond & they all came out the same.How harmful is the high hardness reading to the health of the pond.Thats the only high reading I get on the 5 things I test for now in the pond. Still am going to contact the Health Dept for bacteria tests that I cant do.

Dan B