How do you remove yellow stain that is permanently stuck on sides of swimming pool?

Question

I've tried shocking and yellow out. It seems to be imbedded on
the sides...brushing won't budge it.

Answer 1

Calcium is dropping out of suspension and sticking to the pool surface. Have the calcium hardness checked. There are some stain removers that will soften it up and slowly re-dissolve it, but the process is a slow one. Keep the pH at 7.2 as this stuff is a bit more soluble at a lower pH. It isn't mustard algae which brushes off easily. You might also obtain a stainless steel algae brush to scrub it. Patience and perseverance is what is required. Keep up the stain remover applications and you will prevail. Eventually.

Answer 2

Oxyclean may get the stain out.
Also, I'd call up a pool specialist and tell them the situation. The would probably be better able to answer.

Answer 3

they have this chalk stick at pinch a penny. that will work. i forget what it is called but the associates should know. We had the same problem with our 15 times 30 inch pool and it defintely worked. good luck

Answer 4

Oxyclean

Answer 5

you may want to split the concrete on the best layer and throw it in the pool, then only conceal with dirt. Our neighbor ultimately were given drained of his and made a backyard out of it.

Answer 6

Is it mustard algae? If so, you'll need to contact your local pool maintenance store for the correct chemicals.

Answer 7

Use bleach

Answer 8

it's from peeing in the pool...