Scott Aerator Algae Shield

White bucket of Scotts Algae Shield on a white background

Side-by-side comparison of a park scene labeled 'Before' and 'After' with algea shield .

Side-by-side comparison of a pond before and after cleaning, with trees and grass in the background.

Scott Aerator Algae Shield

$281.15 $295.95

Quick Facts

Feature	Detail
Product Type	Mineral-Based Pond and Lake Water Treatment
Purpose	Reduces Excess Nutrients That Fuel Algae Growth
Product Weight	22 Pounds Per 5-Gallon Bucket
Coverage	Up to 500,000 Gallons of Water
Phosphate Removal	Up to 95% of Available Phosphates
Effective pH Range	5.5 to 10
Dilution Ratio	4 Parts Water to 1 Part Product
Nutrient Barrier	May Remain Effective for Up to 15 Years, Depending on Conditions

A Note Before You Order

Algae Shield is intended for nutrient management in ponds and lakes. Follow the current product label and application instructions for complete treatment details. Application conditions can vary by pond size, water volume, water chemistry, and other site conditions.

Scott Aerator Algae Shield

Algae Shield is an all-natural, mineral-based water treatment designed to reduce the nutrients that contribute to algae growth in ponds and lakes. By binding dissolved phosphates and other nutrients, the treatment helps make those nutrients biologically unavailable and supports clearer water and a more balanced aquatic environment.

A 5-gallon bucket contains 22 pounds of product and treats up to 500,000 gallons of water. The silicate-enhanced formula is designed to work across a pH range of 5.5 to 10, while treated nutrients settle as insoluble particles at the bottom of the pond. Depending on application method and site conditions, the resulting nutrient barrier can remain effective for up to 15 years.

How Algae Shield Works

Nutrient Binding

Algae Shield bonds with dissolved nutrients in the water and converts them into insoluble particles that settle to the pond bottom. Once bound, these nutrients become biologically unavailable, reducing the nutrient supply that can contribute to future algae growth.

Silicate-Enhanced Formula

The silicate-enhanced formula is designed to improve particle stability and support nutrient removal across a wide pH range. The manufacturer states that the product is effective from pH 5.5 to 10.

Long-Term Nutrient Control

Depending on application method and site conditions, Algae Shield can create a nutrient barrier that remains effective for up to 15 years.

Specifications & Details

Specification	Detail
Product Type	All-Natural Mineral-Based Water Treatment
Bucket Size	5 Gallons
Product Weight	22 Pounds
Water Coverage	Up to 500,000 Gallons
Effective pH Range	5.5 to 10
Particle Stability	pH Below 3
Oxygen Demand Reduction	80% to 90%
Orthophosphate Reduction	70% to 80%
Ammonia Reduction	50% to 70%
Turbidity Reduction	Less Than 90%
Available Phosphate Reduction	Up to 95% With a Single Treatment

Application Guide

1. Prepare

Mix Algae Shield with water in a separate container at a 4:1 ratio, using four parts water to one part product.

2. Transfer

Transfer the mixed slurry into an appropriate applicator, such as a backpack sprayer or similar equipment.

3. Apply

Distribute the slurry evenly across the surface of the pond or lake. Wind can assist with spreading the mixture across the water surface, while water movement carries the product beneath the surface.

4. Clean & Store

Rinse the applicator thoroughly after use. The manufacturer recommends emptying the rinse water back into the pond and storing the equipment for future use.

Application Tips

Use a Separate Mixing Container

Do not mix Algae Shield directly inside the applicator. Prepare the slurry in a separate container to help prevent buildup and possible equipment damage.

Maintain the 4:1 Ratio

Keep the mixture at the recommended four parts water to one part product ratio. Avoid excessive dilution, as the slurry should remain properly mixed during application.

Keep the Slurry Moving

For best results, the manufacturer recommends using a trash pump or other continuous agitation equipment to keep the slurry evenly mixed during application.

Use Wind and Water Movement

Wind can help distribute the treatment across the water surface. Beneath the surface, water movement carries the product diagonally through the water.

Frequently Asked Questions

Question	Answer
What is Algae Shield designed to do?	Algae Shield is designed to bind excess phosphates and other dissolved nutrients that can contribute to algae growth in ponds and lakes.
How much water does one bucket treat?	One 5-gallon bucket containing 22 pounds of product treats up to 500,000 gallons of water.
What is the recommended mixing ratio?	Mix four parts water with one part Algae Shield in a separate container before transferring the slurry to the applicator.
What pH range is Algae Shield effective in?	The manufacturer states an effective pH range of 5.5 to 10.
How does Algae Shield control nutrients?	It bonds with dissolved nutrients and converts them into insoluble particles that settle to the bottom, making the nutrients biologically unavailable.
How much phosphate can a treatment remove?	The manufacturer states that a single treatment can eliminate up to 95% of available phosphates.
How long can the nutrient barrier remain effective?	Depending on application method and site conditions, the manufacturer states that the nutrient barrier can remain effective for up to 15 years.
Can Algae Shield be mixed directly in the applicator?	No. The manufacturer recommends mixing the product and water in a separate container before transferring the slurry to the applicator.
What equipment is recommended for application?	A backpack sprayer or similar applicator can be used, while a trash pump or other continuous agitation equipment is recommended to keep the slurry mixed during application.
Does application vary between ponds?	Yes. Application conditions can vary by project, so the treatment process may need to be adjusted for the specific pond or lake.