Applied Biochemists Yellowtrine Algaecide – Mustard Algae Treatment (408622A)
Targeted Mustard Algae Control for Clear, Healthy Pool Water
Defeat one of the toughest types of pool algae with Applied Biochemists Yellowtrine® Algaecide, the fast-acting treatment designed specifically for mustard and yellow algae. Its powerful, non-staining formula works with your sanitizer to eliminate existing blooms while preventing future growth, restoring water clarity quickly and effectively.
Formulated for both residential and commercial pools, Yellowtrine Algaecide (408622A) offers professional-grade results without foaming or discoloration. It’s the trusted solution for pool owners and service pros who need reliable mustard algae removal that’s safe, efficient, and long-lasting.
The Challenge of Mustard Algae — and How Yellowtrine Solves It
Mustard algae is one of the most stubborn and recurring pool problems. It clings tightly to surfaces like walls, steps, and fittings, often resisting chlorine alone. Without targeted treatment, it can return rapidly and spread through your pool system.
Yellowtrine Algaecide is formulated to break down the protective layer that shields mustard algae, exposing it to sanitizers and halting regrowth at the source. It works quickly, clearing yellow algae deposits in hours—not days—while helping your chlorine work more effectively.
Key Benefits
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Specifically targets mustard and yellow algae.
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Fast-acting, non-foaming formula clears blooms quickly.
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Safe for all pool surfaces—including vinyl, fiberglass, and plaster.
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Works synergistically with chlorine for powerful cleanup.
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Prevents future algae growth with residual protection.
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Professional-grade strength trusted by service technicians.
When chlorine alone isn’t enough, Yellowtrine provides the targeted chemistry your pool needs.
Fast-Acting Formula for Visible Results
Within hours of application, Applied Biochemists Yellowtrine begins breaking down visible mustard algae, restoring clarity and balance. Its formula not only eliminates surface growth but also penetrates microscopic layers of algae clinging to pool walls, ladders, and tile lines.
Because it’s non-staining and non-foaming, you can use it confidently in plaster, vinyl, painted, or fiberglass pools without clouding the water or leaving residue behind.
Compatible with All Sanitizer Systems
Yellowtrine works seamlessly alongside chlorine, bromine, ozone, and saltwater sanitizing systems. It doesn’t interfere with filtration, water chemistry, or pH stability, making it safe for daily use in both residential and commercial pools.
Compatibility Highlights
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Saltwater chlorination systems
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Ozone and UV sanitation setups
Use it as part of your normal maintenance program for ongoing protection and cleaner, safer pool water.
Easy Application and Treatment Directions
Using Applied Biochemists Yellowtrine is simple—just brush, pour, and circulate.
How to Apply
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Brush affected surfaces to loosen algae buildup.
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Adjust pH to between 7.2 and 7.6 for best results.
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Add 4 ounces of Yellowtrine per 10,000 gallons of water directly to the pool.
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Run the pump for at least 24 hours to ensure full circulation.
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Vacuum or backwash your filter once algae have cleared.
For Ongoing Prevention
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Add 2 ounces per 10,000 gallons weekly to prevent reappearance.
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Brush walls and steps periodically to stop spores from reattaching.
This easy routine ensures lasting water clarity and stops mustard algae before it takes hold again.
Long-Lasting Algae Prevention
Unlike quick-kill products that only address surface blooms, Yellowtrine Algaecide continues working long after the initial treatment. Its residual protection remains active in the water, helping to prevent recurring outbreaks.
Regular use during warm weather or periods of heavy pool use keeps algae from re-establishing—saving you time and reducing the need for shock treatments.
Safe, Non-Staining Formula
Many algaecides rely on copper-based compounds that can cause stains or greenish tints. Applied Biochemists Yellowtrine is completely copper-free, so it’s safe for all pool finishes, fittings, and liners. It won’t cause discoloration, cloudy water, or damage to filtration components.
This makes it ideal for fiberglass, painted, vinyl, and gunite pools, where staining concerns are common.
Trusted by Pool Professionals for Over 60 Years
Applied Biochemists has built its reputation on professional-grade pool chemistry that works—fast, safely, and consistently. Yellowtrine Algaecide (408622A) is a trusted solution across the pool industry, known for its effectiveness against the most persistent forms of algae.
The Applied Biochemists Advantage
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Proven science-based formulations developed by chemists.
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Non-foaming and surface-safe chemistry.
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Consistent professional performance for both service and homeowner use.
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Proudly manufactured and quality-tested in the USA.
When you choose Yellowtrine, you’re choosing the same chemistry used by professionals to restore pools quickly and keep them pristine.
Product Specifications
| Specification | Detail |
|---|---|
| Brand | Applied Biochemists® |
| Product Name | Yellowtrine® Algaecide |
| Model | 408622A |
| Type | Mustard/Yellow Algae Treatment |
| Active Ingredients | Alkyl (C12-18) dimethyl benzyl ammonium chloride |
| Concentration | 10% Quaternary Ammonium Compound |
| Form | Liquid concentrate |
| Bottle Size | 1 quart (32 fl oz) |
| Coverage | Treats up to 80,000 gallons |
| Foam Level | Non-foaming |
| Copper Content | None (non-staining) |
| Compatibility | Chlorine, bromine, ozone, saltwater |
| Application Frequency | Weekly or as needed |
Storage and Handling
Store Yellowtrine Algaecide in a cool, dry location away from sunlight. Keep container tightly closed when not in use and avoid contact with eyes or skin. Follow label safety instructions carefully, and always use protective gloves when handling pool chemicals.
Why Choose Yellowtrine Over Generic Algaecides
While generic algaecides may provide short-term results, Applied Biochemists Yellowtrine offers professional reliability and targeted control for mustard algae specifically.
Why It’s Better
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Formulated for mustard and yellow algae, not just general algae.
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Copper-free, eliminating risk of staining or green water.
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Non-foaming, perfect for use in spas, waterfalls, and high-circulation systems.
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Long-lasting residual action to prevent future outbreaks.
It’s the difference between temporary relief and lasting protection.
Buy with Confidence from Benchmark Pool Supply
At Benchmark Pool Supply, we carry authentic Applied Biochemists pool care products trusted by professionals and homeowners alike. The Applied Biochemists Yellowtrine Algaecide (408622A) delivers targeted mustard algae control and ongoing prevention in a simple, easy-to-use formula.
We provide fast nationwide shipping, expert product support, and guaranteed genuine stock—so you can keep your pool sparkling clear, safe, and algae-free all season.
Frequently Asked Questions
What type of algae does Yellowtrine kill?
Applied Biochemists Yellowtrine Algaecide targets mustard and yellow algae, which are resistant to chlorine and common in warm, sunny climates.
Is Yellowtrine safe for vinyl and fiberglass pools?
Yes. It’s a copper-free, non-staining formula that’s completely safe for vinyl, fiberglass, painted, and plaster surfaces.
Can I swim after using Yellowtrine?
Wait about one hour after application and ensure normal chlorine levels before swimming.
Does Yellowtrine prevent algae regrowth?
Yes. Its long-lasting residual formula continues to protect against future outbreaks with weekly maintenance doses.
Can I use it with saltwater or bromine pools?
Absolutely. Yellowtrine is fully compatible with saltwater, chlorine, bromine, and ozone systems.
