Jacks Magic Stain Solution #3 Safe Shock, 2 lb Bottle | JMSAFE2 C8416 above my skimmer basket

above my skimmer basket

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8" Pool Anti Vortex Cover

9" opening with a separate

Jacks Magic Stain Solution #3 Safe Shock, 2 lb Bottle | JMSAFE2 C8416 above my skimmer basketO2 safe shock is a non chlorine shock (but not a persulfate compound) . It yields more than 12% active oxygen (3 times more oxygen than persulfate compounds) . O2 safe shock can be used as an acid wash pretreatment, making tough copper stains much easier to remove. Please note: not recommended for maintenance in chlorinated pools, but ideal for biguanide, ozone, and ionization systems. Features and Benefits: Safely removes calcium scale deposits