EFFECTIVE : With Aqua Pura�s Poolsafe Chlorine Granules, maintaining the hygiene and cleanliness of your pool or spa has never been so quick and straightforward. Unlike expensive dosing equipment, which can be very costly and confusing to use, this product can in just 1 to 2 easy steps (depending on the temperature of the water). STABLE CHLORINE SOURCE: The disinfection capabilities of Aqua Pura's Poolsafe Chlorine Granules are long-lasting to ensure your pool or spa remains safe to use for extended periods of time. These granules are designed to disperse evenly throughout your pool or spa, providing it with a steady supply of chlorine derived from TCAA 90%, - a high-grade and cost-effective chlorine source. This product also has a long shelf life, so it can stay in storage without its effectiveness being compromised. BLEACH POWDER ALTERNATIVE: Aqua Pura's Poolsafe Chlorine Granules are a big step up from using bleach to sterilize your pool or spa. Not only are our chlorine granules, unlike bleach, designed specifically for sanitizing pools and hot tubs, but they also will keep your pool or spa water looking fresh by not causing the white turbidity and reduction in water clarity typical of bleach. BIOFOULING CONTROL: Not only can pools or spas become unsanitary and unsafe through the accumulation of microorganisms, plants, algae and more, but they also can become unsightly due to scale buildup or begin functioning sub-optimally when these contaminants reach the plumbing. Aqua Pura's Poolsafe Chlorine Granules are able to prevent and control biofouling, so your pool stays germ-free, looking VERSATILE: While this product was specially designed for pools and spas, it has countless other uses as well! It can essentially be used anywhere there is a need for non-drinking water sterilization. Applications include: civil sanitation, industrial water pre-treatment, cooling water systems, horticulture, aquaculture and more!