HTH EXTRA
HTH Extra can be used once a week to maintain sparkling blue, crystal clear water. Also used for destruction of green and black algae.
- FAST ACTING AND POWERFUL!
- 15% Stronger than regular HTH Shock!
- Contains 75% available chlorine.
- Fast dissolving, EXTRA FINE, formula is made from a patented process.
- Ideal for weekly shock treatments and killing algae.
- Calcium Hypochlorite
- Always test and ensure pH is between 7.2 and 7.6 before shocking
- Test chlorine levels regularly
- Shock after heavy use of pool and after rain as rain can introduce organic contaminants
