Spa Frog

[Davidny]

You'll want to shock whether you are using chlorine or bromine.  It is possible to shock with a high dose of chlorine, but I reccomend using potassium monopersulfate which is a non-chlorine oxidizer.  I think that is what most of the people on the forum use.

On a spa board I read someone recommended using potassium monopersulfate after soaking and a Cl shock once a week. Is it necessary to use Cl at all or can I get away with potassium monopersulfate+ozone+spafrog?

[tileman]

Is it necessary to use Cl at all or can I get away with potassium monopersulfate+ozone+spafrog?

Yes, you need some sort of sanitizer, either chlorine or bromine. MPS has no sanitizing ability. It's strictly an oxidizer.

[NE-Phil]

You'll want to shock whether you are using chlorine or bromine.  It is possible to shock with a high dose of chlorine, but I reccomend using potassium monopersulfate which is a non-chlorine oxidizer.  I think that is what most of the people on the forum use.

Commonly known as MPS, the "non-chlorine" shock. It's made by DuPont. Oxy-Spa is one brand name you'll see. It has the distinction of being 100% MPS - no fillers. That means you'll use less to get the same results.

Phil