Shock, Oxidize and Sanitize with Ultima S.O.S. Ultima S.O.S. is a multi-function formula that shocks, oxidizes and sanitizes. You can swim in as little as 15 minutes after S.O.S. works its 4-in-1 action to eliminate organic wastes.
Use weekly to maintain sparkling clean water.
Since S.O.S. is buffered, it will not affect water balance. S.O.S. is specially formulated to prevent dull, hazy water. Add S.O.S. to pool water every week to oxidize contaminants introduced by bathers and to maintain sparkling clean water.
Chlorine, bromine, ozone and salt water sanitizing systems
S.O.S. is a quick-dissolving shock, oxidizer and sanitizer in one.