I have a new pool that has been filled for 3 weeks and I am just wanting to make sure I am maintaining FC the way I should. My 13,500 gallon pool gets direct sun for the majority of the day. It's only shaded by the house (on east side of pool) until about 9:00 then it's full sun. My CYA level is in the 30-40 range and every evening I've been adding anywhere from 2-3 quarts of liquid chlorine to get a FC level of 5. The FC level wiIl stay at 5 FC overnight but by around 7:00 or 8:00 PM I'm down to 1 or 2. I added 1 lb. of dry CYA in a sock in a skimmer yesterday to try to bring the CYA by 10 hoping that will help reduce chlorine usage. My concern is that at some point in the day my FC is dropping down below the minimum recommended FC level, probably sometime in the afternoon. During the week the pool is being used in the late afternoon and early evening most likely when the FC level is below the minimum recommended level on the FC/CYA ration chart. Is that concerning or is it not a big deal as long as I add enough chlorine in the evening to bring the FC level back up? I may be overthinking this but I got a new toy and just want to make sure I'm taking care of it.