Pool Season Non-Chlorine Shock, 1 lb Bag, 6 Pack, 247-2850

Pool Season Non-Chlorine Shock is an oxygen based oxidizing treatment, supplied here as six 1 lb bags.

Oxygen rather than chlorine

Shocking a pool is about oxidizing the organic load that swimmers leave behind: sweat, oils, lotion and the rest. Chlorine shock does that by pushing chlorine levels high enough to burn it off, which means waiting for the level to come back down before anyone swims. This one oxidizes with potassium peroxymonosulfate instead, at 42.8% with active oxygen at 4.5%, so it clears the load without adding to the chlorine already in the water.

Back in the water in 15 minutes

That is the practical difference. Treated water is ready for swimmers a quarter of an hour later, which makes it a shock that can be used on a weekday evening rather than one that costs the rest of the day.

The six bag pack

This is the half case. The same shock is sold as a single bag and in a twelve bag case, so this size suits a pool that gets shocked through the season without needing a full case on the shelf.