I am very new to this forum and need a little advice.
I have green and black spots on my pool liner and green on my pool ladder. I found this site last week and got my TF-100 test kit and brought my number to above. I am currently in the process of SLAMing. So I added bleach this morning per the calculator to get me to FC of 20. (My CYA was 0 and pH was 8.0 so I corrected those first).
The water is clear and I plan to continue to SLAM per instructions.
So - what do I do about the green and black. Scrub down with a brush? Can you recommend a brush to use?
The black spots are stubborn and don't brush off very easily.
Thanks in advance for any advice!