So I followed your instructions for a temp or seasonal pool and added CYA to my pool. Because it was granular I put the required amount(40ppm) into a 5 gallon bucket and let it sit for about 3 hours and then poured it into my pool. I then slammed my pool using bleach because there was no chlorine in it. Today when I tested the chlorine it was at least 5. I have no way of testing the CYA since I only have a 2 way tester. The ph was 7.2. The question I have is that when I went to swim in it today there were granules sitting on the bottom. Is that okay. The other unusual I noticed is that the filter had something blue in it. Is it safe to swim in?