Shocking the pool water will burn off additional contaminants deposited in the water through rains, winds and organic bather waste.   Formula “O” is an EPA registered, nonchlorine, blended powder that is added to the water weekly. 

The Formula combines most of the typical ancillary chemicals (shock, algaecide, clarifier and other proprietary problem solvers) into one easy weekly treatment rather than adding multiple chemicals separately. 

Formula “O” is so gentle that you can swim in 15 minutes after use.  No need to wait for hours or days for the pool to become safe after shocking with chlorine. 

In the end, the ability to generate multiple levels of oxidation, including ozone, elemental oxygen, peroxide and hydroxyl radicals supplemented with a specific, formulated nonchlorine shock blend  works far better than anything else we tested for water clarity, freshness, and safety in residential pools.