I developed some cloudy water and my CC was pretty high, so I thought I would try the SLAM process.
Test results before:
CYA 74 (I know it is high and is from prior use of dichlor before I knew better)
I applied 57 oz of 8.25% bleach per the Pool Calculator. This should have raised FC to 30ppm (per Chlorine/CYA Table).
I checked again in just over an hour and got these results:
Is this a normal response during a SLAM? A 30ppm drop in FC in an hour?
I assume if so it means there really is something going on in my water that the chlorine is killing.
I added more bleach to get the FC back up to 30ppm. This time I checked the FC level about 10 minutes later just to see if it was actually getting up to 30ppm. Discovered my test kit only reads up to 10ppm. It did show "Hi" as the reading so apparently all I can confirm is that it was above 10ppm.