HTH™ Pool Care Green to Blue Advanced: Blue Pool Shock
HTH™ Pool Care Green to Blue Advanced Shock is a two-part pool shock system engineered for certainty when blooms strike.
- Pack I delivers Cal-hypo shock to kill bacteria and fight algae;
- Pack II is a powerful flocculant that drops debris for easy vacuuming.
- Together, they help transform your swimming pool from green to blue in as little as 24 hours without adding cyanuric acid (CYA) that can lead to chlorine lock.
- Safe for vinyl liners and ideal after storms or heavy use, it’s fast, simple, and proven.
Visibly brilliant sparkle
This Cal Hypo based formula in our blue pool shock transforms water from green to blue within 24 hours without adding cyanuric acid (CYA) to prevent overstabilization or chlorine lock.
Compatible with all swimming pools
Our blue pool shock is effective for all pool types that can vacuum to waste. It’s ideal for vinyl-lined pools and won’t fade liners.
You’re all clear with HTH™
For best results, use with HTH™ 6-Way Test Strips to test and balance your swimming pool water twice weekly.
How to use
HTH™ Green to Blue Advanced: Blue Pool Shock
1. Add Directly to Water
Follow the on-pack instructions according to your pool size.
Follow the on-pack instructions according to your pool size.
2. Vacuum
The built-in flocculant drops algae particles to the bottom of the pool for easy vacuuming.
The built-in flocculant drops algae particles to the bottom of the pool for easy vacuuming.