Okay, so I finally got rid of the algae in the pool thanks to the kind people here. Now I have stains left. Some are dark rust stains around the steps and stuff, probably not rust, more like stains that happen from debris from the trees. Not quite sure how to treat these. The way I have treated them before is just to drop some chlorine granules in that spot. I dont' really want to do that though as it will add calcium to the pool, or if I use other stuff, it adds stabilizer. I have one of those stone things that I can try. Can't remember the name of it offhand.
The next stains are algae stains. the ones that are just like inground into the diamond brite. All the algae appears to be dead as the pool is sparkly clean and I see no more algae developing. How do I get rid of these stains? Most look like dirt ground in, some are greener.