We had a sparkling clear pool for about a day after getting metal issues cleared up after refill. Hubs put the solar cover on overnight and we woke up to no FC and cloudy water with a yellow-greenish tint. Solar cover is off and going to the dump..new cheapy on order. We have been slamming the pool every hour on the hour keeping FC at slam level of 25 (should be 24 based on our cya of 65-70). During the heat of the day it would not hold..dropping as much as 12 ppm in an hour. Now that we have some cloud cover FC held at 25 for a little over an hour. Water is still cloudy but more of a greyish blue color now. We are running out of reagent for FC test (K-2006) but I ordered more this afternoon from your store. Hope we can get this thing done soon....waiting for clear water, CC of less than 1 (it has been .5 since we started), then OCLT test. Do I have this right? We have used 14 bottles of 8.25% 121 oz so far and we will keep at it. I will post test results in the morning.