Chlorine might sanitize pool and spa water, but it’s also nasty stuff for your body, especially in high concentrations. Card on Guard offers solar sanitizers that use natural UV light to reduce chlorine needs (yay science).

Chlorination is one of the most popular methods for disinfecting various forms of water, including tap water and the most obvious type, pool water. After swimming in a chlorinated pool, you can tell it’s not the best for your body. It might cause rashes on your skin, dry out or damage your hair, and burn your eyes, especially when the chlorination levels are high. What you probably don’t know is although it’s good at killing certain pathogens, it’s bad at eliminating toxic compounds called disinfection by-products (DBPs). Bromoform, a compound measured at levels up to 13 times higher than WHO recommends in public salt pools, exemplifies this. Which also brings us to our next point, even salt water pools use chlorine — the salt is converted into chlorine by a salt cell. Wouldn’t it be nice if you could reduce that chlorine and enjoy fresher, better smelling and more pleasant water?

Except, if you simply reduce the amount of chlorine in a pool, whether by lowering the level of salt or reducing the chemical altogether, you open up the basin for more unsavory elements like mold, mildew, and nasty bacteria. Unless you use something like the Card on Guard solar sanitizer. Featuring proprietary BioPhotonX light conversion technology, Card on Guard’s devices utilize UV light, through capture, to break down water molecules and reform them to create free radicals that attack bacteria. The overall point is to reduce chlorine, and reliance on it, while keeping the pool, spa or hot tub at stable pH levels.

How does the Card on Guard solar sanitizer for pools work?

Just a single Card on Guard solar sanitizer tube reduces the need for traditional chemicals by 50% for up to 12 months. It uses natural UV-based water oxidation, emits no chemicals, and every element of the product is recyclable, so it’s environmentally conscious. Card on Guard devices are super easy to use, too, whether you opt for the solar sanitizer fin or the tube. Just drop them into the pool or spa and they’ll cover about 10,000 (tube) to 15,000 gallons (fin).

There’s no charging the device(s). No major setup required. Simply drop the Card on Guard into the pool after ensuring the chlorine or bromine levels are at 2 ppm. In time, it will help reduce chloramines, which burn your eyes, essentially turning the pool or spa into fresh bathwater. No lung burn or respiratory issues either, which are commonly associated with high levels of pool chlorine. You can begin reducing the normally added chlorine over a three-week period, in equal increments, until there’s 50% less. You still need to test the water weekly to ensure it’s balanced and adjust chemicals as necessary, but that’s no different from regular pool or spa care.

Who is it for?

Pool, spa, or hot tub owners that would love to keep a clean bath-like basin without harsh chemicals. You can reduce chlorine and keep the water clear and refreshing.

Where to buy?

MSRP: $39 (Tube) | $59 (Fin)