I have recently changed the water of my pool, 31000 litters.
I added ph + to take it to normal levels.
The pool guy gave me some liquid that he said is algiside with copper and he told me to place it in the pool, which i did.
The pool, after a weeks time and all levels were in normal range the pool plastics ( skimmers on the outside, outlet jets, main drain and the plastic around the lamp turned deep brown color.
The ph when i tested again is really low and i place 600gr of ph+ to bring it to level. I also shocked the pool since it is raining.
I tried to clear the brown stain but it wont come off.
Now what? Will it go away? What shall i do?
P.s when i jet water with the hose there are a lot of foam.