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🌊 Clear your pond, clear your mind—weed-free waters await!
Airmax Ultra PondWeed Defense is a fast-acting liquid herbicide designed for broad-spectrum control of submerged, floating, and emergent pond weeds. Treating up to 5,000 sq ft per 32 fl oz bottle, it visibly browns and kills weeds within 7-10 days, improving water quality and reducing nutrient buildup. Safe for fish and wildlife when used as directed, it’s ideal for residential, commercial, and farm ponds. For best results, pair with Airmax Treatment Booster Plus to enhance herbicide penetration and efficacy.















| ASIN | B00C0DYTM0 |
| Active Ingredients | Herbicide |
| Best Sellers Rank | #75,230 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #353 in Weed Killers |
| Brand | Airmax |
| Brand Name | Airmax |
| Coverage | 5000 square feet |
| Customer Reviews | 4.2 out of 5 stars 141 Reviews |
| Included Components | Ultra PondWeed Defense |
| Item Form | Liquid |
| Item Weight | 12 Pounds |
| Liquid Volume | 1 Gallons |
| Manufacturer | Airmax |
| Model Number | 530154 |
| Part Number | 530154 |
| UPC | 811262014328 |
| Unit Count | 128.0 Fluid Ounces |
D**W
Kiils watermeal and duckweed very well.
I use this on a IWLA pond that I help manage. It is the only thing I have found that can keep watermeal and duckweed in check. I mix it according to the directions and spray every three weeks and it really works.
J**N
Great Product
We purchased this with the treatment booster plus. We used it as directed for weeds that were in our pond mainly below the water. It worked very well. Before using the product there were many weeds visible at the surface of the water. After about a few days there were no visible weeds at the surface where we sprayed. We treated our pond a few times (with a week in between applications as directed). We used a pond rake to get the dead weeds out (ones that we could). It also worked well for above the surface weeds.
B**.
Good prod6
Works great. Fairly priced.
K**L
Very disappointed.
I have a 4 acre pond and decided to try this. Even though it’s fairly expensive. The description says once the weeds die they will sink. “Not”. It did kill pretty good but difficult to spray out. I do believe the pellet form of application would be much better. The video shows how it turned out a month after application. I will say it did not seem to hurt the fish. Was packaged well and was on time.
E**B
Recommend
I have yet to go wrong with Airmax products. I highly recommend most of their products with exception of prices. This particular product works well, but not my favorite. I also use The Pond Guy and local private vendors with exceptional products. Some carry their products at lower cost as well.
D**N
KILL
THANK YOU. WORKS GOOD
M**.
Does not work!
The first gal did not work, so I do not want the second gal. I do not want to accept delivery. It does not kill duckweed.
A**W
Surprisingly Effective
Pond went from 80% covered in seaweed from to barely noticeable in 3 days. Didn’t bother to spray or dilute, just dumped by the fountain intake with added air max booster just to see if it would do anything. We’ll see how long it lasts. No fish harmed - plenty of blue gill, bass, crappie.
Trustpilot
3 weeks ago
2 weeks ago