Coral Seas Yellow Out Pool Shock - 4 lb Algae-Killer & Chlorine Boost

Crystal Clear Water Starts with Yellow Out

Coral Seas Yellow Out is a powerful pool shock designed to tackle all common algae strains—green, brown, pink, and mustard—within roughly 24 hours. It dissolves instantly with no brushing required, helping restore the pool’s natural clarity without leaving harsh residues on the surface. After you add Yellow Out, an oxidizer activates the formula, giving you the flexibility to choose chlorine, bleach, or a non-chlorine shock as your next step.

Key Benefits in One Dose

• Multi-purpose chemistry: helps raise chlorine levels, and can influence water hardness and pH for balanced water.
• Strong performance: a high chlorine content delivers a quick boost when water chemistry needs attention.
• Fast-dissolving, no brushing needed: simply add to the pool and it starts working promptly.
• Effective algae control: targets several algae strains to improve water appearance and feel.
• Night-friendly application: many pool owners treat pools at night to reduce sunlight effects and maximize impact.

How to Use for Best Results

To activate Yellow Out, add the product to the pool and then introduce your preferred oxidizer after a short wait. Do not premix Yellow Out with chlorine or any other chemicals. The rule of thumb is 2 lb treats per 15,000 gallons, and this product supports treatment across different pool surfaces and systems, including salt generators.

• Mix before you fix: dissolve the powder in a bucket of water before pouring into the pool.
• 2 lbs treats 15,000 gallons of pool water.
• Never premix Yellow Out with chlorine or other chemicals.
• Follow with chlorine, bleach, or a non-chlorine oxidizer to activate the formula.

Surface Compatibility and Safety

Yellow Out is designed to be safe for plaster, fiberglass, vinyl pools, and pools with salt generators. Always follow the label directions and handle with care to protect pool finishes and equipment. While it supports clearer water, results can vary with current conditions and usage patterns.

Why Choose Yellow Out?

For pool owners seeking a straightforward, chemical-smart approach to algae challenges, Yellow Out offers a practical option that combines rapid action with flexible oxidizer choices. It’s crafted to fit into everyday pool maintenance routines without requiring aggressive scrubbing or complicated mixing, while still delivering the potential for noticeably clearer water over a short period.