FROG® Serene® In-Line System Spa Pipe Cleaner Phosphate levels will drop to

Phosphate levels will drop to near zero in less than 24 hours

Concentrated clarifier that clears up cloudy water

cartridge and DE filter

brass or copper around Pristine Blue

FROG® Serene® In-Line System Spa Pipe Cleaner Phosphate levels will drop toOur FROG Serene System is so popular, some spa brands have built it directly into their spas. It makes hot tub care even easier, and your hot tub experience even more luxurious. With FROG Serene, theres no measuring out the right amount or constantly adding chemicals. You simply replace your FROG Serene cartridges when used up and enjoy weeks of Fresh Mineral Water. Thats what FROG Serene provides with minerals and a low level of bromine that makes