Disclaimer: I don't know what material was used to make this pool. A friend told me it might be gunnite but I don't know. It is a slightly rough surface (sides and floor both).
The pool floor is blue. I've noticed over time that there are some white spots appearing on the ground, sometimes small dots, and sometimes larger patches. I *think* they are getting worse. I've taken some pics and video of them -- would anyone have any suggestions as to what they might be or if there's anything I can do about them?
When I go into the pool and touch them, they are always the same consistency as the rest of the pool floor -- in other words -- it doesn't seem like the surface is flaking/breaking off.
Video from above ground: