Why wait for algae to invade your pool? AlgaeShield™ is algae prevention. Most algae products on the market are made for use after an ugly outbreak of algae occurs. AlgaeShield actually defends against ugly green water.


·    Low dosage - Just 1 ounce per 1,000 gallons
·    Low maintenance - Treat 1x every 30 days
·    Environmentally friendly
·    Not dissipated by the sun
·    Less cost - Just 1¢ per gallon per month
·    Proactive - Algae defense rather than treatment
·    Use to winterize & make spring openings easier
·    100% guaranteed

AlgaeShield Prevents Algae - Guaranteed!

AlgaeShield comes with an Algae Free Guarantee. If your pool develops algae when AlgaeShield is used properly, Earth Science Labs will refund your product purchase price. See label for details.


Algae can be prevented with just one ounce of AlgaeShield per 1,000 gallons, once a month. AlgaeShield works within a wide pH range, but for bather comfort, maintain the pH between 7.2 and 7.6 or as recommended by your swimming pool dealer.


Regular Application

Apply AlgaeShield at a dose of 1 ounce per 1,000 gallons of pool water, once per month.

Do Not Add AlgaeShield more than once per month and do not exceed this recommended dosage rate, except to treat an existing algae bloom.


Seasonal Closing

A single treatment at the end of the season is normally all it takes to keep a pool crystal clear until spring.

1. Balance the water.
2. Shock the pool with a standard chlorine shock.
3. Clean the pool and backwash the filter.
4. Add 1 ounce of Algae Shield per 1,000 gallons of pool water.
5. Follow pool and equipment manufacturer’s freeze recommendations. Unused AlgaeShield must be stored at a temperature above 32º Fahrenheit.
6. Cover the pool and shut down the filter.



Algae Bloom

1. Add AlgaeShield at a rate of 2 ounces per 1,000 gallons of pool water.
2. Run the filter constantly for 48 hours.
3. Add a standard chlorine shock to oxidize any dead algae.
4. Do not add AlgaeShield for 30 days before resuming regular application procedures.


Earth Science Laboratories, Inc. • (800) 962-1492

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