Is my cell dying?

[JimK]

Maybe it's time to try a taylor k-1766 drop based salt test kit? My local pool store actually carries those.

Thanks for the suggestion.

I looked into that before and decided to go with the AquaCheck Salt Strips that were recommended here. I was told the strips do a good job (they seem to do fine).

I'll take a look at the Taylor kit again.

I'm wondering if the 300 ppm is simply the normal range of error. I think I remember years ago being told by the pool store that installed our system (I was having them test salt back then; they were using the Taylor kits) that it was normal to see a variation of 200 ppm or 300 ppm.