Ultima S.O.S. Shock

Add S.O.S. every week to oxidize contaminants introduced by bathers and to maintain sparkling clean water.

Shock, Oxidize and Sanitize with Ultima S.O.S Shock. 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. Since S.O.S. is buffered, it will not affect water balance. S.O.S. is specially formulated to prevent dull, hazy water.

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