I used the taylor drop test with the silver nitrate to determine I am at 3200ppm for the salt.
The "instant" value goes to 9999 and then falls to around 2600 before it says check salt and inspect cell.
We just bought this place so I'll have to look and see if the previous owner left anything telling us how old it is.
What should the inside of the cell look like when you take it out?
I will go inspect it...just not sure what I'm looking for.