Jack's Magic O2 Safe Shock - 2 lb

O2 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.