25 lb. Yellowtrine Yellowtrine™ algaecide quickly rids pools of mustard outbreaks. Its fast-dissolving formula will destroy deposits without leaving a residue. Features: Dissolves quickly Leaves no residue May be used in all types of pools Applications: Weekly Maintenance (based on 10,000 gallons): 1. For water temperature above 80 degrees, add 4 oz. of Yellowtrine™ algaecide with 1 gallon liquid chlorinating compound or 1 lb. of a dry chlorinating compound once a week. 2. For water temperatures under 80 degrees, add 2 oz. of Yellowtrine™ algaecide weekly and 1/2 gallon liquid chlorinating compound or 1/2 lb. of a dry chlorinating compound. Yellow or Mustard Alage Removal : 1. Brush walls and floor areas affected by yellow algae. 2. Apply 4 oz. of Yellowtrine™ algaecide as close to affected area as possible. 3. Superchlorinate by adding 1 gallon liquid chlorinating compound or 1 lb. of a dry chlorinating compound. 4. Add Prevent Plus to prevent non-metallic deposits and to maintain water clarity.