This stuff is amazing for fiberglass stairs. Running a well and adding water weekly adds a lot of metals in my pool and begins to turn my stairs into a golden rust color, not good,.. I turn off the jets sprinkle a little over the stairs and within 12 hours Viola,.. White as a ghost, just the way I want it!!
- Less expensive alternative to ascorbic acid
- Ideal for fiberglass pools
- Non-toxic and will not harm the environment
- Compatible with all sanitizers and pool surfaces
- Phosphate-Free formula
Works great on my fiberglass pool for iron stains. Pout it in and 24 hours later pool looks like new.
Been fighting a vinyl liner stain off and on all summer. Someone recommended this, and it works like a charm.