SPA FROG Replacement Mineral Cartridge is to be used with:
The minerals control bacteria and algae. With minerals, Bromine can drop from 2 PPM to 1 PPM and still remain effective. The two together = great water.
Adding a spa ozone generator to your hot tub further reduces chemicals including Bromine, shock, pH Up, pH Down, Metal Control. Your spa water will be pure and clean - you'll love it!
Using recylcled materials and no electricty means this mineral purifier an eco-friendly product, purifying your water naturally with less waste.
This SPA FROG mineral purifier lasts 4 months (or when you change your water, no longer than 6 months), and comes wiith an easy reminder dial.