While using chlorine can help maintain the pH of the pool to prevent most algae growth, it is vital to plan for an acid wash to completely remove the layer of plaster where algae may be growing, as some strains may be resistant to the chemicals used. Since the plaster lining of pools is porous, algae grows and develops in the pores if the pool is not maintained consistently. This results in discoloration of the pool, as well as dirty water. If not addressed quickly, the pool can be permanently stained and would need to be replastered. An acid wash is a little harsh on the surface of your pool and should therefore be done sparingly and professionally. Let us help you with the guesswork–contact us today.