I must have lost a lot of water over the winter because my CYA previously 40 is now showing as 0. So I know I need to increase that and have used the pool calculator to determine how much I need to add to get to CYA 30. I put solid CYA in a sock and have it dangling in front of the return water spout so it is being introduced to the pool over time. My questions is what level of FC should I maintain to shock the pool based on:
At 0 CYA I should maintain .64 and at 30 CYA I should maintain 12.2 according to the chart.
Also a secondary question I live in Michigan and it's just starting to warm up so probably 2-3 weeks before I will want to swim anyway. Is there any reason not to just crank the FC up to like 25 just to kill all the algea knowing that I am not going to actually get into the pool for a couple weeks and that I will ensure the FC has dropped to a safe level before swimming?