We believe the more often the same problem occurs, the easier it should be to solve. And few things can be as persistent as yellow algae. That’s why we have Yellow Treat®: it was the first product in the marketplace to utilize sodium bromide and is still a mainstay for pool service techs from CA to FL. It’s formula is so powerful that just a 5 ounces can treat up to 10,000 gallons. For over 40 years, Yellow Treat® has been the most trusted algae solution on the market – making persistent mustard algae easy to kill.