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Want to get rid of your yellow mustard algae, try Jacks Magic "The Yellow Stuff". It is a highly effective algaecide targeted specifically at killing off yellow/mustard algae growth, a very tough form of algae that many other generic algaecides are powerless against. Its granular formula dissolves quickly without the messy measuring and handling that liquid alternatives demand, and leaves no ugly residues in your pool. Best of all, The Yellow Stuff is compatible with all pool types, making it a great choice for your pool.
Brush walls and floor areas affected by yellow algae accumulation.
Apply 4 ounces per 10,000 gallons as close to the affected areas as possible. For severe accumulations, double the above dosage.
Superchlorinate by following directions of that product's label.
NOTE: Swimming may be resumed a few hours after treatment.
Weekly Maintenance Dose:
With water temperature over 80 degrees F, add 4 ounces with 1 gallon of liquid chlorine or 1 pound of dry chlorine weekly.
With water temperature under 80 degrees F, add 2 ounces with 1/2 gallon of liquid chlorine or 1/2 pound of dry chlorine weekly.