First photo—Does anyone have any input on what this long streak could be from? Does it look like a stain or potentially some kind of permanent mark on our pool floor? I tried brushing but no improvement.... I’m also wondering if anyone has seen a robot pool cleaner cause any damage that looks like this..
Second photo— does this look like a worm stain? I tried to brush but nothing changed and we have 4 or 5 spots that look like this... what do you think it is and what can I do to clean it? Thanks so much!
Second photo— does this look like a worm stain? I tried to brush but nothing changed and we have 4 or 5 spots that look like this... what do you think it is and what can I do to clean it? Thanks so much!