Dive into pure relaxation with the HTH Spa Care pH Decreaser Crystal. This pH-balancing gem ensures your spa's water is a sanctuary of comfort and quality. By dialing in the pH levels, it supercharges your sanitizer's efficiency, wards off surface scaling, and bids farewell to pesky skin and eye irritations. Suitable for all spa types, from bromine to chlorine, this crystal is your ticket to a blissful soak every time.