Draining the pool and washing down with a weak hydrochloric acid solution will remove the stains.
Copper sulfate in swimming pools.
Copper sulfate does not eliminate the need for chlorine bromine or other pool sanitizers.
Copper sulfate otherwise known as bluestone is sometimes used in swimming pools as an algaecide.
Copper sulphate whilst being an excellent algaecide will not sanitise disinfect your pool water.
Copper sulfate is also used in order to help with public health and safety.
Copper based algaecides and algaestats are the commonest source of copper salts for pools but copper sulphate is also a preventative treatment and an effective cure for many algae attacks.
Link to product info on amazon it will sanitise the water and won t stain the pool it has the added benefit of being harmless to the ozone layer it breaks down into hydrogen and oxygen.
It s also much cheaper than proprietary chemicals.
Cu h 2 o 6 2 a copper algaecide such as copper sulfate pentahydrate when added can bond with water molecules giving us a brilliant copper sulfate blue but crystal clear pool as shown above.
Make sure you mix the copper sulfate with water in a plastic container make sure the blue crystals are dissolved.
Copper sulfate does not replace the need for pool sanitizers such as chlorine.
Copper salts react with chlorine to produce cupric oxide and and may cause grey black stains on pool surfaces.
It destroys algae and bacteria caused by growing algae in swimming pools in addition to preventing athlete s foot a fungal infection that grows in between the toes in warm climates such as an indoor swimming pool.
I use a 2 gallon plastic container with a sprinkler head on it like you use to.
That s where the chlorine comes in or you could use hydrogen peroxide affil.