Hello, new to pool stuff. I want to start off by thanking those that advised against the vision pro mineral cartridge system last month when my pool was being installed. Short season, but i really loved the little time spent in the pool. I wanted to start off with the BBB system, but i had a bunch of chemicals that came with the pool so i made due. Now I am closing my pool. I have cleaned thoroughly (vacuum and brushed walls) removed steps, covered with winter covering. I tested my water with all chemicals falling in normal parameters. I am using aquacheck strips. Plan on having recommended kit for start-up. Can I trust this test enough to treat my pool for the winter? I believe the CYA is slighter lower than ideal, should I raise it with stabilizer before I close? I bought 10% liquid chlorine to shock for winter. How long should i let the pump filter run after putting in all that chlorine before shutting filter down? I have not put the cover on permanently because I need to figure out what to use as pillow for the cover. Pool is 21 x 43 . How much surface space must I take up with inflatables? A lot of questions, I know. Thank you to anyone that has some answers for me. Just had to add a few more. Do I need to remove the light that is in the return housing? And just how much water should I drain? What are the thoughts on the little gizmos that cover the skimmer as opposed to draining water below? Melinda