Yellow Stains In Pool Plaster

Plaster was and still is the most common type of finish.

Yellow stains in pool plaster.

Iron can be introduced into a pool by well water or pipe corrosion somewhere in the pool system. A weak cowardly algae it hides in the places that our cleaning equipment and sanitizers don t always reach effectively. I ve try to shock the pool and use the brush to brush it. Many pool owners find yellow algae to be one of the more difficult strains of algae to.

Can any shed some light. 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. 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. Mike norwood on april 30 2017 at 1 21 pm said.

Enzymes for oily dirty stains acid washing for all plaster tile and coping stains keep pool water balanced and brush often. 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. 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. Plaster finishes are more likely to stain because the surface of the finish is porous.

Poor water balance can become corrosive or scaling and both conditions can cause plaster pool stains by making it easy for minerals and metals to come out of. While the finish appears smooth it is not. Your first clue to diagnosing a pool stain is to check out it s color. Once again having the correct water balance is important.

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. When there is too much of a mineral present in the water it can begin to stain the pool. Pool stains on the wall or floor of a swimming pool can be caused by metals in the pool water or by an organic material left in the pool. Unlike algae iron deposits resist scrubbing and take a lot of elbow grease to remove.

If your pool is a dark plaster color you can then try an acidic stain remover like stain free or stain away. I have one little spot at the bottom of my pool that the gunite shows through the plaster of the pool.