Eliminate stubborn pool algae fast with HTH Extra Algimycin 1L (72148C) — a powerful, concentrated 60% non-metallic polyquat algaecide designed to kill, prevent, and control green, black, and mustard algae in all types of swimming pools.

This advanced multi-purpose formula works quickly to restore water clarity while preventing future algae outbreaks when used as part of a weekly maintenance routine.

Powerful 60% Polymer Formula for Maximum Protection

HTH Extra Algimycin features a high-strength 60% quaternary ammonium polymer (polyquat) formula containing:

• Alkyl dimethyl benzyl ammonium chloride

• Alkyl dimethyl ethylbenzyl ammonium chloride

Unlike copper-based algaecides, this non-metallic formula will not stain pool surfaces or cause discoloration — making it safe for vinyl liners, fiberglass, concrete pools, and saltwater systems.

Triple-Action Algae Control

✔ Kills existing algae blooms (green, yellow/mustard, black)
✔ Prevents future algae growth
✔ Clarifies water with built-in coagulants and filtration enhancers

The non-foaming, fast-acting formula works with your pool’s filtration system to help bind and remove dead algae particles, restoring clear blue water often within 24 hours when used correctly.

Compatible With All Pool Systems

HTH Extra Algimycin is safe and effective with:

• Chlorine systems

• Bromine systems

• Saltwater pools

• Ozone systems

• Mineral systems

Its versatile liquid formula makes it easy to apply directly into the pool water with the pump running.

Directions for Best Results

For Visible Algae (Initial Treatment):

1. Ensure pump and filter are running.

2. Add the recommended dose directly around the pool perimeter.

3. Brush affected areas thoroughly.

4. For heavy algae blooms, use in conjunction with a shock treatment for best results.

5. Vacuum settled debris to waste if possible to prevent filter clogging.

Weekly Maintenance:

• Add the recommended maintenance dose weekly to prevent regrowth and maintain sparkling clear water.

⚠ Always follow label instructions carefully for accurate dosing based on your pool’s water volume.

Why Pool Owners Choose HTH Extra Algimycin

• Highly concentrated and cost-effective

• Non-foaming and fast acting

• Mild odor

• No metal staining

• Proven results when used with shock treatment

For season-long algae protection and crystal-clear water, trust HTH Extra Algimycin 1L — a professional-strength solution designed to keep your swimming pool clean, clear, and algae-free.