I have been servicing a pool for 6 months. When I took over the pool it already had brown stains, but over time they have gotten worse. The brown has gotten darker and the pool has developed more stains.
Buying a stain remover that needs to be put directly onto the stains is no good as the pool is covered in them.
What, currently, is the best treatment for such stains? One that can simply be added to the pool as opposed to directly onto the stains.