what order to add the chemicals

[Charlie_R]

In my own small pool, I've noted that the pH false readings seem to start for me at around 30 - 35ppm FC. I don't know if it would be true for a larger pool, though. Another thing I've noted is when the FC is high, the pH test tends to climb the scale over time. The higher the FC, the faster the climb. At 50 FC, it is a noticeable color change. Like within seconds, the color will change from 7.2 all the way to above 8.0. Where at 30 FC, the change creeps up on you, taking 2-3 min to go from 7.4 to 7.6.

As I said, this appears to be true for a ~4.4k gal pool, but as I have nothing to compare it to, I don't know about larger or smaller pools.

[Watermom]

With a Taylor K2006 kit, you can test pH reliably up to about a chlorine level of 15. This is not true for other kits, though.

(It doesn't have anything to do with the pool's volume, by the way.)

[Charlie_R]

I was just thinking that the water volume difference would have bearing on it, that's all.

Thank you, Watermom!