This is my first post. I finally registered on the site, but I've been reading for some time now, thanks to some good friends at work who directed me here and told me what test kit to get! I am currently fighting algae using the SLAM process, but I'm not sure if I'm doing it right. Progress seems very slow. I started SLAM on Sunday, but since I work Mon-Fri, I am only able to test water in the morning before work and in the evening after work (roughly 10 hours). Today is Thursday, and the water is still green, but it does appear to be a lighter green. Is this normal? The CYA test each day is between 40-50, and I use pool math to add chlorine each day to keep my FC at 20-22. I test every morning and every evening, and the FC is never below 18, so I just keep adding chlorine (per the pool math) to get it back up to 20-22. I brush the sides of the pool every evening, and clean the cartridge every day. Is this what I'm supposed to be doing, or am I missing something?