Greetings, I had to replace the water in my pool because it got flooded with salt water during hurricane Helene. I had some staining on the pool walls that I had never addressed due to the need to bring the chlorine level to zero, so decided to do a stain treatment while there is no chlorine in the pool. I used Suncoast iron and cobalt stain remover. It says not to introduce chlorine for 36 hours, but is that truly necessary? If the staining is gone, would introducing chlorine at 24 hours be OK?