I have a SWG which is programmed to run all night (at 80% for 9 hours) and it produces chlorine that raises the FC by 3 overnight. On most normal days my FC loss is 2 but on real sunny and hot days FC loss is closer to 3. I been measuring my FC daily and in the morning it reads 9 to 10 and in the evening 7 to 8. Pool is clear and all other readings are balanced but i am having to add about a cup of MA daily to keep PH at 7.2. Should I by running the SWG differently (ie less time or higher %) or is it OK?