Just want to thank everyone in advance!
New to this site, however, I have been reading a lot on here in the last few years! Here is my question....
Does anyone know what these spots are? My pool was recently plastered (about a month ago) and these showed up (or I just happened to notice them) about 4-5 days ago. They are only in the shallow end. Tried brushing them with a nylon brush (since the plaster is still curing) and they aren't moving/vanishing. I tried to scrape one off (they are tiny) with my nail but nothing happened.
After reading, I'm thinking black algae but I don't want to jump the gun and do something that will ruin the plaster!
I've pretty much maintained the pool chemicals, however, the first two weeks, I did not use stabilizer or chlorine since I was told by the pool co. to wait two weeks. Of course, the temp here was ridiculously high! I have been adding algaecide and metal out since week 2. When I initially started using the pucks, they were gone within a day until the stabilizer was added.
Here are my recent numbers:
PH: 7.8 (added acid yesterday)
Pool is approx. 25k Gallons, Gunite, White Plaster.
The pool store gave me great suggestions if it is black algae, however, I did not have a picture to show them.
Any help would be great!