I bought a Hach test kit quite a few years ago. I used it 3 or 4 times and then set it on the shelf. By the next year, the chemicals had deteriorated and I haven't messed with it since.

Now, I just buy pool test strips. They are general vicinity and not really what I need. However, buying new chemicals can get expensive.

It's not about the fish. It's about the pond. Take care of the pond and the fish will be fine. PB subscriber since before it was in color.

Without a sense of urgency, Nothing ever gets done.

Boy, if I say "sic em", you'd better look for something to bite. Sam Shelley Rancher and Farmer Muleshoe Texas 1892-1985 RIP Grandpa