The Natural Alternative to Chlorine (and Bromine too! ) Product Features: Lasts four months. Makes spas easy to manage. Improves performance of ozone-equipped spas. Assures an odor-free spa. Significantly improves look & feel of water. Simplifies water balance — it's unaffected by heat.
Specifications-
Capacity: for spas up to 500 gallons.
Run time: minimum 4 hours daily.
Flow rate: works with all spa flow rates
Installation: Drops into the core of most spa filters works with suction-side and pressure-side filters.