Algaecide for Swimming Pools

Prevents Algae

Defends against stubborn pool algae.


Clears Water

Built-in clarifier helps to maintain crystal clear water.


Salt Pool Compatible

Non-foaming formula is suitable for all pool types, including salt water pools.

Maintain a Clear Pool

Your pool chemistry can change quickly. Test your pool water weekly to ensure your Free Chlorine level remains between 1 – 4 ppm.  Apply a preventative algaecide weekly to fight algae and keep your pool clear.

Maintain a regular cleaning regimen. Skim water surface, brush walls, vacuum and empty skimmer baskets at least once per week. Download the Clorox® Pool app on the Apple App Store or Google Play for expert water analysis and product and dosage recommendations.

This season, spend less time maintaining and more time enjoying your swimming pool!

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Product reviews

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Better than the rest

I’ve had a pool for 20 years. Every year I have trouble with algae. Until I found Clorox brand Fungicide I bought every brand I could find and had no results, fighting algae through July to September. Not so with Clorox brand. I use it weekly and I never have trouble with algae anymore.
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No Algae

It works, after weeks of Algae. Pour 1 galon and brush daily
Ease of Use: 5 Effectiveness: 5
Ventura county
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It worked!

New pool owner, permasalt system (treat every 2 weeks) and we were in between treatments. Pool turned green after swimming all weekend, dumped the prescribed amount in (check the calculator from Clorox) at 730am and the pool was normal by 12pm. Definitely recommend using!
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