Retested PH using 1/4c distilled and 1/4c pool water and it is close to 7.0, but a smidge lighter so it could still be somewhere in between 6.8 and 7.0. Did not do acid or base demand. I guess it's safe with CC of 1 and FC of 13 to get in there with the brush tonight or no?

I was reading on another thread that if there is CC present the water will turn pink immediately after adding 5 drops of R-0003, but this is not the case. It only started turning a very faint hardly distinguishable pink after sitting there at least 15-20 seconds AFTER swirling a while after the very last drop of R-0003, maybe longer(I wasn't really counting). Could it be just something it does if you let it sit a while?