As I am shocking my pool at over 20ppm FC, I am just tearing through my reagents, and I am worried that I am going to run out and not be able to get replacements before I am done. Probably a dumb question, but for FC, Is it possible to do a 1/2 dilution, test as normal, and then multiply the result by 2?
I do have reverse osmosis water that I could use for this.
I do have reverse osmosis water that I could use for this.