Yellow Stains In Pool Plaster

While the finish appears smooth it is not.

Yellow stains in pool plaster.

Enzymes for oily dirty stains acid washing for all plaster tile and coping stains keep pool water balanced and brush often. Here s some information of my pool 24 000 gal concrete with plaster cartridge filter 1 1 4 hp pump there are some yellow stain at the bottom of my pool and i am not sure what causes it. Shades of yellow can be a sign of excessive iron. A small swimming pool stain is usually caused by a metal object being left on the plaster bottom long enough to rust and leave a stain.

Iron can be introduced into a pool by well water or pipe corrosion somewhere in the pool system. Mike norwood on april 30 2017 at 1 21 pm said. When there is too much of a mineral present in the water it can begin to stain the pool. Sometimes it can be fairly easy to get rid of stains but other times those hard to remove spots can take a bit more than a simple scrub.

If your pool is a dark plaster color you can then try an acidic stain remover like stain free or stain away. Many pool owners find yellow algae to be one of the more difficult strains of algae to. Most metals when subjected to swimming pool water chemicals will react and leave a stain where they were in contact with the pool s plaster the most common objects to stain swimming pools are soda or beer cans pop tops and coins. Can any shed some light.

Once again having the correct water balance is important. I ve try to shock the pool and use the brush to brush it. A weak cowardly algae it hides in the places that our cleaning equipment and sanitizers don t always reach effectively. Unlike algae iron deposits resist scrubbing and take a lot of elbow grease to remove.

Essentially a plaster pool is what many refer to as a concrete pool. Pits or crevices in plaster or dips and dirty areas on a pool liner create a safe harbor for this particular strain of pool algae. Plaster was and still is the most common type of finish. Plaster finishes are more likely to stain because the surface of the finish is porous.

I have one little spot at the bottom of my pool that the gunite shows through the plaster of the pool. The finish is a mixture of cement and water.