FROG® Serene® In-Line System Spa Pipe Cleaner pre-dissolve the product prior to

pre-dissolve the product prior to applying evenly to the deep end of the pool

check Baquacil Sanitizer concentration and pH

When make-up water contains metals

cobalt and silver staining

add the chlorine weekly

FROG® Serene® In-Line System Spa Pipe Cleaner pre-dissolve the product prior 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