![What are the black stains on the floor of my liner and how do I get rid of them? | McEwen Industries What are the black stains on the floor of my liner and how do I get rid of them? | McEwen Industries](https://mcewenindustries.com/wp-content/uploads/2019/04/Moldy-Pool.jpg)
What are the black stains on the floor of my liner and how do I get rid of them? | McEwen Industries
![I beat CYA, thanks to your help. Now my pool liner is stained from iron.. any way to clean this up? : r/pools I beat CYA, thanks to your help. Now my pool liner is stained from iron.. any way to clean this up? : r/pools](https://preview.redd.it/vf3w9bjwo8d51.jpg?auto=webp&s=e63ad5783b3842a20c18346272a1c5527836d4a5)
I beat CYA, thanks to your help. Now my pool liner is stained from iron.. any way to clean this up? : r/pools
![Is there a way to fix (large dark spot at the bottom) discoloration on a gunite pool? I tried acid wash and had no luck : r/pools Is there a way to fix (large dark spot at the bottom) discoloration on a gunite pool? I tried acid wash and had no luck : r/pools](https://i.redd.it/vreh5o0307m61.jpg)
Is there a way to fix (large dark spot at the bottom) discoloration on a gunite pool? I tried acid wash and had no luck : r/pools
![Stain on vinyl liner? My chemicals are perfect. I've brushed and scrubbed by hand. I've rubbed it with a chlorine tab and vitamin c tablets. Nothing makes a difference. Any ideas? : Stain on vinyl liner? My chemicals are perfect. I've brushed and scrubbed by hand. I've rubbed it with a chlorine tab and vitamin c tablets. Nothing makes a difference. Any ideas? :](https://i.redd.it/25ldcg9w3iz21.jpg)