Mustard algae is one of the most persistent and deceptive algae types found in swimming pools. Often mistaken for dirt or sand, it clings to shaded walls, steps, and pool equipment, resisting normal chlorine levels and returning quickly if not treated correctly. Applied Biochemists Yellowtrine Algaecide is a professional-grade solution designed specifically to eliminate mustard (yellow) algae and prevent it from coming back.

Yellowtrine is formulated for corrective treatment when mustard algae is present and for follow-up control in pools prone to recurring outbreaks. Pool service professionals rely on this targeted algaecide because it delivers strong results without foaming, staining, or damaging pool surfaces.

Why Mustard Algae Requires Targeted Treatment

Mustard algae behaves differently than green algae. It is more chlorine-tolerant, spreads easily through pool accessories, and often survives standard shock treatments.

Proper mustard algae control matters because it helps:

• Eliminate chlorine-resistant yellow algae

• Prevent repeated outbreaks in shaded areas

• Reduce sanitizer demand caused by active algae

• Protect pool surfaces and equipment from contamination

Applied Biochemists Yellowtrine is engineered to address these challenges directly.

How Applied Biochemists Yellowtrine Works

Yellowtrine uses a specialized algaecide formulation designed to attack mustard algae at the cellular level. This allows it to penetrate algae colonies that resist normal sanitation and disrupt their ability to survive and reproduce.

When combined with proper brushing, circulation, and filtration, Yellowtrine helps remove visible algae while reducing the likelihood of reinfestation on walls, floors, and pool accessories.

When to Use Applied Biochemists Yellowtrine

Yellowtrine is intended for corrective and follow-up treatment in pools affected by mustard algae, including:

• Yellow or sand-like algae on walls and steps

• Algae that returns quickly after shocking

• Shaded pool areas with recurring growth

• Pools with a history of mustard algae problems

• Post-cleanup treatment to prevent reinfestation

Because mustard algae spreads easily, treating pool tools, brushes, and accessories alongside the pool is recommended.

Compatibility with Pool Systems & Surfaces

Applied Biochemists Yellowtrine is safe for use in most standard swimming pool environments. It is compatible with chlorine pools and professionally maintained systems.

It can be used on plaster, pebble, fiberglass, and vinyl-lined pools and works with cartridge, sand, and DE filtration systems. When used according to label directions, it will not foam or stain pool surfaces.

Professional-Grade Mustard Algae Control

Yellowtrine is not a general-purpose algaecide. It is a specialized treatment for chlorine-resistant mustard algae, making it an essential tool for pools that struggle with repeat yellow algae outbreaks.

Service professionals value Yellowtrine for its predictable dosing, strong corrective action, and ability to integrate into structured algae-removal procedures.

Application & Treatment Best Practices

For best results, affected areas should be thoroughly brushed before treatment to expose algae growth. Yellowtrine should then be added to circulating water according to label instructions.

Filtration should run continuously during treatment, and accessories such as brushes, hoses, and toys should be cleaned to prevent reintroduction. Maintaining proper sanitizer levels after treatment helps prevent recurrence.

Always follow manufacturer label directions for dosing and safety.

Product Information

Buy with Confidence from Benchmark Pool Supply

When you purchase Applied Biochemists Yellowtrine from Benchmark Pool Supply, you’re choosing a professional-grade algae treatment backed by real pool expertise. We stock corrective chemicals trusted by service technicians and experienced pool owners, supported by knowledgeable staff and reliable online fulfillment.

You can trust you’re getting the right product for stubborn algae problems—stored properly and ready to work.