I shock my pool last week to a FC level of 30ppm because of the beginnings of an algae problem on the floor of the pool. After the water cleared up, and I passed the OCLT, and the CC's dropped to 0, I started to let the FC level drop back to normal. Today (a week later) FC level is finally 9.5. It's the first day that FC gotten close to the normal range since shocking. Just for good measure, I did the OCLT last night to this morning, and I only lost 0.5 overnight. Yesterday, the water looked great. However, this morning the water still looks clear, but I'm starting to get the same little green algae blooms and trails on the floor of the pool that prompted me to shock last week. I'm frustrated because my test results from this morning indicate fairly normal. I have been brushing the pool all week, with light swimming. We have had heavy rain for the last two days that added 2 inches of water to my pool. Here's my morning test results:
I know the PH and TA are a little high. I wasn't able to accurately monitor the PH for the last week since FC was above 10. I'm going to lower the PH this afternoon, and I'm considering shocking again Any ideas?