Water chemistry

What is a leaf-shaped black splotch on the floor of my cement pool? I have scrubbed it and it does not move

Hi Mrsebert,

The first step will be to identify for stain and we have several resources to help identify your stain I have listed below…

Pool Stain ID Video

Pool Stain ID Blog Post

We suggest starting with a Jacks Magic Pool Stain ID Kit to help determine your stain.