FROG® Filter Mate® (Formerly Filter FROG). The mineral sanitizer that cleans and softens hot tub water inside your filter cartridge. While you’ll add dichlor or bromine separately, you’ll need half the usual amount, because our FROG minerals are active sanitizers. The result is you kill bacteria two ways – with minerals and a low level of chlorine or bromine. We call it Fresh Mineral Water®∞ because it looks and feels amazing.

Ah, your hot tub, shouldn't caring for your hot tub be as pleasant and worry-free as using it? We think so. Which is why we created, FROG Serene. FROG Serene takes away the measuring and the mess. The daily chore of adding chlorine granules. Serene takes away the smell of Chlorine and the harsh feeling water that irritates skin, fades swimsuits, and ruins surfaces. Serene takes away the big swings in pH and the heavy Bromine use. Serene takes away the dull cloudy water and fears about bacteria. With FROG Serene, what you are left with is serenity. Water that feels soft and gentle to the skin. Thanks to a proprietary blend, of fresh minerals and low bromine, you're left with crystal clear water and weeks of maintenance-free, worry-free relaxation.

FROG® Serene® Floating System (formerly SPA FROG). Complete Hot Tub Sanitizing Floater creates Fresh Mineral Water

FROG® Serene® In-Line System (formerly SPA FROG). Built-in Hot Tub Care Sanitizer creates Fresh Mineral Water

How to Lower Bromine Levels in a Hot Tub with FROG Serene®? 1. Remove the Bromine Cartridge from the spa. If the bromine level is over 4.0 ppm, remove the Bromine Cartridge and store in a safe place away from children, pets, metals or open flame until the level drops to 1.0 ppm. 2. Determine if the bromine cartridge setting is too high. When the bromine level has come down to 1.0 ppm, replace the cartridge in the spa at one setting lower than it was before. Test the water in 24 hours to determine if it has risen, declined or remained the same. Adjust the cartridge accordingly until 1.0 to 2.0 ppm is maintained. 3. Evaluate your spa usage. If the spa is not being used very often, then the need for bromine (bromine demand) is lessened. You may need to remove the system from the spa periodically to avoid continuous over bromination.

How to Raise Bromine Levels in a Hot Tub with FROG Serene®? 1. Check to see if the bromine cartridge is empty. 2. Determine if the bromine cartridge setting is too low. 3. Evaluate your spa usage. 4. Clean your filter. 5. Check the expiration date on your test strips or kit.

How to Raise Chlorine Levels in a Hot Tub with FROG® @ease®? If your test strip shows a lighter color than the bottle label, one of two things may be happening. First, check to see if your SmartChlor Cartridge is empty. Remove the SmartChlor Cartridge from the system, drain all the water and shake to see if you hear any SmartChlor left inside. If your cartridge is not empty, then check your water balance.