1 6

Airmax

Airmax Knockdown Defense 2-in-1 Liquid Pond Algae Control, Effective & Fast Acting Algaecide, Aquatic Weed Treatment for Clear Water in Ponds & Lakes, Liquid Formulation, 16 oz with Treatment Booster

Airmax Knockdown Defense 2-in-1 Liquid Pond Algae Control, Effective & Fast Acting Algaecide, Aquatic Weed Treatment for Clear Water in Ponds & Lakes, Liquid Formulation, 16 oz with Treatment Booster

$164.99 USD
$164.99 USD
Sale Sold out
Shipping calculated at checkout.

Overview

  • Brand : Airmax
  • Liquid Volume : 16 Fluid Ounces
  • Item Form : Liquid
  • Manufacturer : Airmax, Inc.

About this item

  • Powerful formula: KnockDown Defense eliminates a variety of invasive weeds and algae including: floating algae, watermeal, duckweed, watermilfoil, fanwort, hydrilla, and more. KnockDown Defense is effective in ponds, lakes, and slow moving or inactive water such as canals.
  • Fast results: Whether you’re dealing with floating algae or submerged aquatic plants, KnockDown works fast to eliminate algae and weeds to restore your pond or lake in 3-5 days.
  • Liquid formulation: KnockDown Defense is a liquid algae control and aquatic herbicide that is easy to measure, mix, and apply. For best results, apply aquatic weed control treatment with a surfactant and a tank sprayer.
  • Innovative solution: KnockDown Defense is a fast-acting and long-lasting combination treatment for both algae and pond weed control. Developed to be effective on even the toughest invasive lake weeds and algae.
  • For ponds & lakes: KnockDown Defense provides fast-acting, long-lasting pond weed control. Use 0.75-1.5 fluid ounces of KnockDown Defense for every 1/8 acre or roughly 5,500 sq/ft. Use as directed.
View full details

Collections

🌱 Green Care. Green Growth. GreenSprout. 🌱


Whether you’re tending to a windowsill plant, building your dream garden, or searching for the perfect gift for a fellow gardener, GreenSprout is here to bring growth, care, and inspiration into your life.

SHOP NOW

Customer Reviews

  • ⭐⭐⭐⭐⭐

    Emma L.

    "Greensprout has completely transformed my balcony into a peaceful green retreat. The tools feel natural in my hands, and every product has such a calming, thoughtful touch. It’s my favorite part of slow mornings now."

  • ⭐⭐⭐⭐⭐

    Daniel R.

    "I love how everything from Greensprout feels fresh and intentional. My garden space now feels like a healing sanctuary where I can breathe and recharge. Small joys really do make a big difference."

  • ⭐⭐⭐⭐⭐

    Sofia M.

    "Every order from Greensprout brings me so much happiness. The plants, the decor, the quality — all perfect. It’s more than a shop; it’s a reminder to slow down and enjoy the little green moments in life."
Shop Now

Blog Posts

1 3

Frequently Asked Question

Do you offer free shipping?

Yes, we provide free standard shipping on all orders over $100. For orders under $100, a small shipping fee applies, which will be shown at checkout.

What is your refund policy?

If you're not completely satisfied with your purchase, you can return it within 14 for a full refund. Please ensure the item is unused and in its original packaging.

How can I get a tracking number for my order?

If your order has been shipped, we will add the tracking number to your order and notify you via the email address you entered when ordering.

How do I process a return or exchange?

For returns or exchanges, please contact us within 14 days of receiving the product, along with a receipt or screenshot of the purchase, and a photo of the product with the packaging or tag intact.