We just got our pool a month ago. The FC levels dropped to 0 the first week we had the pool. I didn't have a good test kit and didn't know what I was doing yet. There were no sign of any algae. Last week we noticed the walls and floors getting slimy, no color to the slime and the water is very clear. The only place that looked like it may be algae was the skimmer with a black ring and some greenish grayish bubbles. I did the slam process until I didn't lose any FC for 2 nights in a row. The pool had been losing 1 ppm a night prior to slamming. Everything seemed fine until a couple days ago and the slime returned. There is no FC loss overnight. I brought the pool to shock level last night and it held till this am. I can't find any other reason beside algae, for the slime but I don't have any other indications of algae and slamming the pool got rid of it once. I tried just brushing it but that didn't get rid of it.
My last full test was done on tue. morning:
I brought the FC up to 15 last night.
I'm wondering what the slime could be if it's not algae. Any help will be greatly appreciated.
I am doing the BBB method but used a about 5 trichlor pucks to help raise the CYA (they came with the pool so I figured I would use them)