United Chemical Yellow Treat

United Chemical Yellow Treat is the most trusted yellow algae removal product! Yellow and mustard algae grow fast – especially when the weather gets warm and your chlorine begins to burn fast. It can appear on your pool walls and steps – seemingly out of nowhere. Yellow Treat is the first patented, sodium bromide-based algaecide to be EPA registered. Its powerful formula has made it the number one choice of pool professionals for almost 40 years. Using Yellow Treat is also easy! Just add one capful per 10,000 gallons of pool water, brush affected areas, then shock your pool. Doesn’t contain copper or silver so it won’t stain your pool.