We believe Fiberglass should live up to its promise of being an easy surface to take care of. However, cobalt staining can turn fiberglass into an eye-sore. Cobalt Cure® is specifically for “cobalting”; the phenomenon where cobalt is leached from the resin of fiberglass. Cobalt Cure® will remove these spots in 3 days or less without draining.
Note: Never drain your pool or spa without advice from the manufacturer or qualified professional. Improper draining can cause your fiberglass pool to “pop” or oat out of the ground – causing extensive damage.
- Turn off the pump.
- Add 2 gallons of Muriatic Acid or 2 lbs. of No Mor Muriatic Acid® or 5 lbs. of Easy Acid® per 15,000 gallons of pool water to lower Total Alkalinity. Note: Total Alkalinity must reach zero. If Total Alkalinity is not zero, more acid will need to be added.
- Add 2 bottles of Cobalt Cure® per 15,000 gallons and brush the entire pool. Let stand for 24 hours or until spots disappear.
- Re-balance pH using pH increaser or Easy pH®. Pump may be turned back on once pH reaches 7.2 or higher.
- To prevent re-occurrence of cobalting, add one capful of Cobalt Cure® per 3,000 gallons every week. If spots begin to reappear, double the dose. Maintain a Total Alkalinity below 70 ppm.
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