Test for Cyanuric Acid using fresh reagents or INSTA-TEST™ 6-in-1 test strips then follow the Guru Guidelines for the full FIX.
To avoid in future:
- Use only NON-STABILISED (Calcium-based) chlorine products
- If you prefer Stabilised Chlorine, winterize with non stabilised tablets or floater
- Test Cyanurate levels every two months and adjust.