Overview
KnockDown Defense provides fast control of tough invasive weeds such as duckweed, watermeal, fanwort, hydrilla, as well as algae. KnockDown is an EPA registered liquid herbicide which contains 42% of the active ingredient Flumioxazin. Ideal for controlling algae and submerged aquatic weeds in ponds and lakes. Effective in slow-moving or quiescent waters such as bayous, canals, drainage ditches, reservoirs, and marshes. KnockDown is very versatile and breaks down quickly in water without accumulating in the sediment or clogging application sprayers. Best results when mixed with water and Treatment Booster® Plus in a tank sprayer.
Support



Weeds Treated









How to Use
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16 Ounce |
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Application | Liquid |
Temperature Restriction | None |
Square Footage Per Container | Up to 10,000 Square Feet |
Shelf Life | 2-Year |
Dosage Rates
Treatment Area |
KnockDown Surface Application |
KnockDown Subsurface Application 3' Avg. Depth |
Water (Gallons) |
Treatment Booster Plus |
---|---|---|---|---|
1/8 Acre (5,445 Sq Ft) | 0.75-1.5 Ounces | 6.6-13.2 Ounces | 1 Gallon | 2 Ounces |
1/4 Acre (10,890 Sq Ft) | 1.5-3 Ounces | 13.2 - 26.4 Ounces | 2 Gallons | 4 Ounces |
1/2 Acre (21,780 Sq Ft) | 3-6 Ounces | 26.4 - 52.8 Ounces | 4 Gallons | 8 Ounces |
1 Acre (43,560 Sq Ft) | 6-12 Ounces | 52.8 - 105.6 Ounces | 8 Gallons | 16 Ounces |
Please note: Above are recommendations. Always read the product label. Treat at proper rates to prevent plants from building chemical resistance. Early morning treatments are most effective.
WHEN TO APPLY
KnockDown Defense has no temperature restriction. Apply when weeds are actively growing. In areas with dense weed vegetation, only treat 1/2 of the water body at one time and wait 10-14 days before treating the remaining area. Do not re-treat the same section of water within 28 days of application.
HOW TO APPLY
Dilute with clean tap water. When treating submerged weeds and algae, submerge the spray nozzle several inches into the water. When treating floating plants and algae, evenly spray rain-size droplets over the treatment area. For best results, use Treatment Booster Plus.
- SURFACE APPLICATION: Mix 0.75-1.5 oz of KnockDown, 2 fl oz Treatment Booster Plus and 1 gal of water for every 1/8 acre (5,456 sq ft).
- SUBSURFACE APPLICATION: Mix 2.2-4.4 oz of KnockDown, 2 fl oz Treatment Booster Plus and 1 gal of water for every 1/8 acre (5,456 sq ft) per 1' average depth. Example: 1/8 acre with 3' average depth would require 12 oz ( 4 fl oz x 3).
WATER USE RESTRICTIONS
Wait 5 days before using treated water for irrigation. Do not use in water utilized for crawfish farming. Do not re-treat the same section of water within 28 days of application.
STATE RESTRICTIONS
KnockDown Defense can not be shipped to Alaska, California, Connecticut, Deleware, District of Columbia, Hawaii, Massachusetts, Maine, New Jersey, New York, Puerto Rico, Rhode Island, Vermont, Washington, or Canada.
Accessories & Related Items
Accessories
Reviews
Airmax is committed to product quality and your satisfaction. If you have any questions regarding the use of our products please don't hesitate to contact us. We would be happy to hear from you.
Item Numbers and UPC
Item Number |
UPC Code |
Size |
---|---|---|
530268 | 810089840295 | 16 Ounce |

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