This will be my first time slamming...I'm opening for the season and my water is green, so just have a question. It says to raise the FC shock level to your current CYA level. I have a swg pool, and right now my current cya level is 20. Do I just raise the fc level to 10 with my swg off? Or raise the cya level to at least 60 before I start to raise my fc level?