Using different forms of bromine


Well-known member
Apr 29, 2016
Denver CO
I don’t understand something and am hoping someone can explain it to me.
If I use a floater with bromine tablets I supposedly can shock with chlorine ( Dichlor) or non- chlorine ( MPS). And I need to add a sodium bromide packet on a refill to build up a bromide bank.
But with the Frog system that has an in- line cartridge with bromine granules, I ‘m told by the manufacturer that I am to add Dichlor on a fill instead of bromide packet and then afterwards to only use MPS for shocking- not Dichlor.


Silver Supporter
Bronze Supporter
TFP Guide
Oct 20, 2017
Southern WI
Pool Size
Liquid Chlorine
MPS, chlorine, or ozone can all be used to oxidize the bromine ions in your bromide bank into hypobromous acid, which is what actually sanitizes a bromine hot tub. I'm not very familiar with bromine chemistry, I use chlorine, but the sticky goes into pretty decent detail on this: How do I use Bromine in my spa (or pool)?
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