Spa Frog Maintain - 12 PackSpa Frog Maintain Spa Frogs Maintain product perfectly accompanies the Spa Frog Floating System or In Line System by starting up a freshly filled spa with an initial chlorine level. The effervescent action helps the chlorine dissolve faster and the fizz tells you it's working! For periodic shocking, use Frog Maintain, its one dose in one single easy to pour pouch for one easy maintenance shock to keep your water crystal clear. No measuring, no guess,