Spa Frog is all about a new way to purify water with a natural approach that reduces chemical use. The best news is that Spa Frog is compatible with most products on the market, including bromine, chlorine and non-chlorine shocks. With just a smidgen of chemical support, your spa care is complete with no bleached swimming suits, skin irritation or smelly fumes. Spa Frog works great with ozonators too! Spa Frog knows that your number one priority is relaxation. Its unique blend of minerals works together to make your water softer, safer and sparkling clear. To keep you relaxing, Spa Frog works on eliminating bacteria and preventing algae growth while it also helps to neutralize low pH. For four full months, Spa Frog works inside your filter cartridge with no electricity and no hassles. It even has an easy-to-set dial as a reminder to replace it. HOW THE SPA FROG WORKS SPA FROG MINERAL PURIFIER Regular price: $36.99 Sale price: $29.99 2 PACK SPECIAL ON SPA FROGS Regular price: $73.98 Sale price: $54.99