It's not clear to me that you completed the SLAM. If you didn't, that must be done before you continue with stain removal, CH, etc.
What does your water look like? Have you passed the OCLT? Perform the Overnight FC Loss Test (OCLT) - Trouble Free Pool
What does your water look like? Have you passed the OCLT? Perform the Overnight FC Loss Test (OCLT) - Trouble Free Pool