My Pool is Yellow!

Mustard Algae is a form of green algae that is highly resistant to chlorine. Special treatments must be used to eliminate it. Mustard algae is yellowish-green in color and often looks like dirt or sand on the bottom or sides of the pool. It brushes away very easily, but returns very quickly. If left untreated, it can turn the entire pool a pea-green color in a very short time.

Chlorine Pool Treatment

  1. Read all treatment steps and chemical labels before beginning.
  2. Decrease water temperature to 72 degrees if possible. If necessary, drain some water out and add new water to the pool.
  3. Adjust pH to 7.2-7.4.
  4. Clean the filter. Backwash sand filters, change D.E., or hose off cartridge filter.
  5. Raise your chlorine level to 3.0-5.0 ppm. (1 gallon of Allied Pool Shock per 10,000 gallons of pool water.)
  6. Brush pool walls and bottom thoroughly.
  7. Wait 15 minutes after adding chlorine to add a dose of 8 ounces every 10 minutes of Allied Pools Silver Algaecide through the skimmer until the recommended dosage of 16 ounces per 10,000 gallons of pool water is reached. If the pool does not have a skimmer, add Allied Pools Silver Algaecide below water level in front of the return by squeezing the bottle at the same rate as mentioned above.
  8. Run the filter continuously (24 hours per day) for at least 72 hours after treatment or until the pool clears and subsequently 8-12 hours per day.
  9. Chemically clean the filter with Kleen It. Follow directions on bottle for sand, D.E., and cartridge filter.
  10. Add a maintenance dose of 4 ounces (per 10,000 gallons of pool water) Allied Pools Super Algaecide 600 5 to 7 days after treatment and each week going forward.

Biguanide Pool Treatment

  1. Read all treatment steps and chemical labels before beginning.
  2. Adjust pH to the proper range. (7.2-7.6)
  3. Add an initial dose of 16 ounces of Biguanide Algaecide per 10,000 gallons of pool water.
  4. Brush pool walls and bottom thoroughly.
  5. Add 2 gallons of Biguanide Shock per 10,000 gallons of pool water.
  6. Run the filter continuously (24 hours per day) until the pool clears and subsequently 8-12 hours per day.
  7. Chemically clean the filter with Kleen It. Follow directions on bottle for sand, D.E., and cartridge filter.
  8. Add a maintenance dose of 2 ounces of Biguanide Algaecide per 10,000 gallons of pool water each week going forward and after heavy rainfalls.
  9. Add a maintenance dose of 1 gallon of Biguanide Shock per 10,000 gallons of pool water each month going forward and after heavy rainfalls.

Flat Pool Gallonage (48″ Pool)

  • 12′ = 3,100 16′ = 5,500 18′ = 6,700 21′ = 9,000 24′ = 12,000 28′ = 16,500
  • 12′X24′ = 7,000 16′X24′ = 9,000 16′X32′ = 12,250 18′X34′ = 14,300 41′X21′ = 20,000