The FROG Pool Frog Inground Mineral Reservoir is a game-changer for your swimming pool. By utilizing minerals, it eliminates bacteria and balances acidity, resulting in crystal clear water. With up to 50% less chlorine usage, it provides an environmentally friendly and cost-effective sanitization solution for in ground pools up to 40,000 gallons. Easy to install and lasting up to 6 months, it ensures year-round cleanliness.