HTH® Pool Care Green to Blue Advanced

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Fight a severe algae bloom and transform your swimming pool water from green to blue in 24 hours with this easy-to-use system.

  • Simple 2-step system
  • Pack I is a strong algae-fighting pool shock with Cal Hypo
  • Pack II is a powerful flocculant that drops particles to floor for easy vacuuming

Visibly brilliant sparkle

This Cal Hypo based formula 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

This product 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

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.