There is a fair chance its chlorinated trisodium phosphate, widely called Pink Stain Remover (PSR).
If it came from a commercial club it could be most anything, the colouring (pink) is just something manufacturers add, like blue bits in laundry powder.
Look up PSR, its good on glass and plastic, usually just a level teaspoon in 5L of warm water. It is however a bit of an environmental cluster f'ck, if that matters to you.
Mark
If it came from a commercial club it could be most anything, the colouring (pink) is just something manufacturers add, like blue bits in laundry powder.
Look up PSR, its good on glass and plastic, usually just a level teaspoon in 5L of warm water. It is however a bit of an environmental cluster f'ck, if that matters to you.
Mark