• A pool brush can prevent scale(Pools water absorb particles from the outside air, then settle to the bottom, finally build up as layers of scale film)/ prevent stains(Pool stains are often a mixture of  spores, bacteria, dirt, minerals, oils or from tiny metal objects in the pool)/ prevent algae(Algae can find a ready source of dusty food and establish a firm foothold in dirty pool water) and prevent etching.