Airmax CrystalClear AlgaeOff
Price range: $21.99 through $99.99
- No More Algae
- Kills & Removes Algae
- Fast Acting, Works on Contact
- Great for Rocks, Streams & Waterfalls
- Will Not Harm Fish or Ornamental Plants
Stock | amount | Price | |
---|---|---|---|
2.5 lb. | $21.99 | ||
8 lb. | $49.99 | ||
25 lb. | $99.99 |
Description
Overview
CrystalClear has been the proven solution and market leader in water garden EPA-registered algaecides. CrystalClear AlgaeOff works on contact to immediately remove string algae from rocks, streams, and waterfalls. This EPA-registered, granular algaecide utilizes the latest oxygen technology to kill and remove string algae quickly and efficiently.
Reactive treatments such as algaecides, herbicides, and mechanical tools can help control unwanted weeds or algae and are a vital step in the Airmax Ecosystem, a simple 3 step approach to pond and lake management. The Airmax Ecosystem is the industry-leading method to achieve a clean, transparent, thriving aquatic ecosystem. Learn more about the Airmax Ecosystem.
AlgaeOff cannot be shipped to Alaska, Hawaii, Puerto Rico, or Canada.
Weeds Treated

How to Use
![]() 2.5 Pound
|
![]() 8 Pound
|
![]() 25 Pound
|
|
---|---|---|---|
Application | Granular Powder | Granular Powder | Granular Powder |
Temperature Restriction | None | None | None |
Surface Area Treated per Container | Up to 1,000 sq ft | Up to 4,000 sq ft | Up to 10,000 sq ft |
Shelf Life | 5 Year | 5 Year | 5 Year |
Dosage Rates
Surface Area (Square Feet) |
AlgaeOff (As Needed) |
---|---|
25 – 50 Square Feet | 1/4 Cup |
51 – 100 Square Feet | 1/2 Cup |
101 – 150 Square Feet | 3/4 Cup |
151 – 200 Square Feet | 1 Cup |
201 – 250 Square Feet | 1.5 Cup |
Please note: Above are recommendations for light algae growth. Dosage rates may double with heavier growth. Always read the product label.
When to Apply
Apply AlgaeOff to kill or remove actively growing algae at the prescribed rate to treat existing algae growth. AlgaeOff is ideal for rocks, streams, and waterfalls.
How to Apply
AlgaeOff is water-activated. Apply AlgaeOff granules over a wet surface with algae growth or activate with water immediately following application. For waterfall applications, turn off waterfall pumps, allow AlgaeOff to sit on the waterfall for 20 minutes, and then turn the pumps back on.
Skim the dead algae or organic material that rises to the water’s surface after treatment to keep dead organics from sinking to the bottom of the pond. Dead and decaying organics provide food and additional nutrients for future algae blooms. Allow 48 hours between consecutive treatments.
For liquid applications, please follow all label instructions. Due to solubility, AlgaeOff is less effective with this application method.
Restrictions
- After application, do not allow undiluted granules to remain in an unsupervised area where humans or animals are exposed.
- Be careful when applying granules. If undiluted granules contact non-targeted plants, they will suffer contact burns.
State Restrictions
AlgaeOff cannot be shipped to Alaska, Hawaii, Puerto Rico, or Canada.
Product Notices
Keep products away from children and pets when not in use. AlgaeOff becomes hazards to humans and domestic animals – if absorbed through the skin or swallowed.
Additional information
amount | 2.5 lb., 8 lb., 25 lb. |
---|