I'm not sure, the pool was here long before we were
OK, I'll try that.
I'll give that a shot. Only issue is, the Taylor test kit only has color samples for 1, 2, 3, 5, 7.5 & 10 ppm. I take it if I'm @ 10ppm for the first test, as long as the color doesn't dip to the 7.5, that's still OK? It...