United Chemical Yellow Treat 2 lb – Algae Killer for Pools & Spas | YT-C12 (2 Pack)

Overview

United Chemical Yellow Treat 2 lb (YT-C12) is a rescue solution designed to tackle blooms of yellow and mustard algae in any pool or spa. This non-toxic algicide has earned trust among pool owners for its practical approach to clearing water when algae appears. The product is compact, allowing you to target problem areas without heavy dosing, and it works best when paired with your standard water care routine.

As the original mustard algae killer, Yellow Treat helped popularize and normalize the use of sodium bromide as an algaecide. A small dose goes a long way: just 5 ounces treats up to 10,000 gallons. In combination with ongoing chlorine or bromine sanitization, Yellow Treat can support clearer water and easier maintenance, especially during warm weather or heavy pool use.

How it fits into your routine

Yellow Treat is designed to be used as part of a practical, safety-conscious process. It works best when you follow a simple sequence that balances quick action with ongoing care. The steps below summarize a typical, user-friendly plan that aims to keep algae at bay while you maintain proper sanitizer levels.

• Broadcast the recommended dose directly onto the water surface, then brush Surrounding surfaces to help distribute the product.
• Prepare for super-chlorination by applying a liquid or dry EPA-registered chlorine product according to its label.
• Before swimming, test chlorine and wait until the residual drops to about 3 ppm.
• Maintain chlorination with tablets or a chemical feeder; consider slow-dissolving tablets during busy, hot periods.
• To help prevent recurrence, use No Mor Problems in conjunction with your regular chlorinating or brominating routine.

Why choose Yellow Treat

• Rescue treatment for blooms of yellow and mustard algae in any pool or spa.
• Original mustard algae killer that helped popularize sodium bromide as an algaecide.
• Compact 2 lb package, with a dose of 5 ounces treating up to 10,000 gallons.
• Non-toxic algicide compatible with standard pool care routines.
• Supports ongoing algae prevention when used alongside regular chlorination or bromination.

Real-world use

Homeowners report noticeable clarity after a rescue treatment, followed by routine brushing and proper sanitizer management. The mix of a targeted dose and subsequent chlorination offers a practical path to clearer water during peak swimming season, holidays, or post-storm algae growth. Always follow label directions for dosing, brushing, and testing to maintain balanced water chemistry.

Note: This summary conveys product purpose and usage guidance without guaranteeing specific results. For best performance, integrate Yellow Treat into a comprehensive pool care plan described on the product label.