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Description
herbicide for duckweed Fluridone Aquatic Herbicide – Sonar AS Equivalent Weed Control 64 ozFluridone Aquatic Herbicide is a professional grade systemic aquatic herbicide formulated for long term selective control of invasive aquatic weeds in ponds, lakes, reservoirs, canals, and other freshwater systems. Containing 41. 7% fluridonethe same active ingredient concentration found in Sonar ASthis proven aquatic herbicide provides cost effective season long control of difficult submerged and floating weeds including duckweed, hydrilla, pondweed,
Fluridone Aquatic Herbicide is a professional-grade systemic aquatic herbicide formulated for long-term selective control of invasive aquatic weeds in ponds, lakes, reservoirs, canals, and other freshwater systems. Containing 41.7% fluridone—the same active ingredient concentration found in Sonar AS—this proven aquatic herbicide provides cost-effective season-long control of difficult submerged and floating weeds including duckweed, hydrilla, pondweed, watermeal, and milfoil. Fluridone works by disrupting carotenoid production in susceptible aquatic plants, gradually bleaching and eliminating weeds over a 30–90 day period while minimizing oxygen depletion and sudden vegetation collapse. Visible bleaching symptoms typically begin appearing within 7–10 days after treatment depending on weed species, water temperature, and concentration levels. Designed for use in static or slow-moving water bodies with minimal outflow, Fluridone Aquatic Herbicide is an excellent choice for restoring water clarity and long-term aquatic weed management. It may also be combined with Cutrine Plus Algaecide for broader aquatic vegetation and algae control programs. When applied at 150 ppb or lower according to label directions, treated water may continue to be used for swimming, drinking, and livestock consumption.Features & Benefits
- ✅ Selective systemic aquatic herbicide for long-term weed control
- ✅ Contains 41.7% fluridone — same active ingredient strength as Sonar AS
- ✅ Controls duckweed, hydrilla, pondweed, watermeal, milfoil, and other aquatic weeds
- ✅ Provides season-long control with gradual plant elimination
- ✅ Visible bleaching effects often begin within 7–10 days
- ✅ Helps restore water clarity in ponds, lakes, and reservoirs
- ✅ Ideal for static or low-outflow aquatic systems
- ✅ Compatible with Cutrine Plus Algaecide programs
- ✅ Safe for swimming, drinking, and livestock use at labeled concentrations
Use Sites
Ponds, lakes, reservoirs, irrigation canals, drainage canals, freshwater impoundments, golf course ponds, ornamental ponds, and other labeled freshwater aquatic systems.Target Weeds
Duckweed, hydrilla, pondweed, Eurasian watermilfoil, watermeal, coontail, bladderwort, fanwort, and other labeled aquatic weeds.Application Notes
Fluridone treatments require maintaining proper herbicide concentration levels over time for optimum control. Best results are achieved in static or slow-moving water with minimal dilution or outflow. Weed control may take 30–90 days depending on environmental conditions and weed species. Follow all irrigation and site-specific restrictions listed on the product label.Product Information
Active Ingredient: Fluridone 41.7%HRAC Group: Group 12 Herbicide
Formulation: Liquid Aquatic Herbicide
Herbicide Type: Systemic Selective Aquatic Herbicide
Comparable Product: Sonar AS Equivalent
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4.0 ★★★★★
Based on 17 reviews
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Product Reviews
★★★★★ 5
A classic
Format: Mass Market Paperback
The Once and Future King is a saga I didn't want to end. There's enough in it to read it again, and again. The paperback squeezes 4 books into a volume you can carry in a purse, but unless you're traveling, I would recommend buying the books separately, with illustrations.
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Reviewed in the United States on May 9, 2026
★★★★★ 5
The Once and Future TH White
This book is in my lifetime top ten list. I've read it three times. Its pages are full of wisdom, humor, mysticism and hard life, an unbeatable combination. I call the story "a hopeful tragedy." For sure it is a high tragedy up to Greek levels and then some. And yet it's hopefulness lies in King Arthur's ability to continue deepening, learning, reaching for the goodness that he still believes is in every person.
Someone said that The Once and Future King was the "Harry Potter" of its day. While I love the Harry Potter series, Rowling is no T.H. White. Her writing is a serviceable yeoman's march compared with White's kingly, profound, sometimes soaring performance. Harry changes very little as he grows up, while his supporting characters seem to stay exactly the same. Not so with Arthur. He changes before our very eyes, sometimes not for the better, as does Lancelot, Guinever and others. Though both tales are mythological, White's story feels real and gets us deep down in the bowels of our conscience, our morality and our fears. Eventually, it provokes compassion, allowing us to become more forgiving of ourselves and others. Not a bad way to live in the world. When you really learn something, you become a different person. You will really learn something from The Once and Future King, making T.H. the Once and Future White.
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Reviewed in the United States on May 17, 2009
★★★★★ 3
Not what I expected
Format: Mass Market Paperback
I love stories about King Arthur and that time period in general. I really looked forward to this book because of the high ratings and my special interest in the subject. There was a lot to like about the book. The author was imaginative and, at times, the writing and characters came alive.
I have to say sometimes it was kind of like riding in an old car over a road filled with pot holes -- I kept getting shook out of the story by either references to things not from that time period or the endless social commentary that seemed to be the real point in the author writing the story. By about halfway I was wondering why he didn't give up on the story and just write a philosophy book. He wasn't being subtle. I just wanted to get back to the action and felt like I was being preached at through the narrator and the characters. I also love historical details but be aware that this author tends to mention armor and then go on and on for a while to explain it down to the tiniest detail - same with jousting - the details of what the men are wearing as fashion - what is hanging in the room - and so on.
As for the characters, it was sad to see Arthur diminish to being almost a shadow or joke near the end. The glorious king who was supposed to be so strong appeared to have no power to do anything and even allowed himself to have no voice in his own court (Gawaine did the talking). He didn't have any real presence after the very beginning though - not even as a tragic character until the very end. The author didn't make him feel like a real person in what is supposed to be his story. Arthur is the shadow between Lancelot and Gwen (or Jenny), Arthur is the go-between for the vengeful knights in his failing efforts to keep peace... He stands back hoping something will happen to stop the burning of his wife... he is not instigating but moderating action. He is even described as plain, shuffling... Not the grand King Arthur.
Merlyn was a joke as well. His magic was more like a Disney cartoon special than anything resembling Arthurian legend and the constant references to things from the future (or Merlyn's past if you buy him living backwards) kept yanking me out of the "story world" and the other characters almost never reacted to it - as if it were normal. He leaves soon after Arthur becomes king and never comes back (you know the whole locked in the cave thing).
The character most fleshed out is Lancelot. The author spends a great deal of time into his motives, feelings and actions through almost the entire book. If it weren't for the very beginning, you might be able to make an argument that more is written of Lancelot than of Arthur. Lancelot seems stronger, more driven and more clearly defined nearly at all times in the book. You know what he wants and how far he'll go to get it.
In the end I am glad I read it, but it isn't my favorite Arthurian book and I doubt I'll read it again.
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Reviewed in the United States on November 30, 2010
★★★★★ 5
A Classic
Format: Mass Market Paperback
A classic that deserves to be re-read to our children and grandchildren
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Reviewed in the United States on March 22, 2026
★★★★★ 4
A challenging read
Every now and then I challenge myself with a classic. This one was definitely that - a challenge. Allow me to explain.
First, this is the story of King Arthur. All the characters are present: Gweniviere, Lancelot, Merlin, the Knights of the Round Table, the sword in the stone, Mordred, and all the ones I’d ever heard of in retellings-of the story. However, many were not as good, bad, beautiful, handsome, or courageous and pure of heart as I’d been led to imagine. These characters were messy and deep with honor and dishonor battling within them. But there was a quiet strength and desire to do good about them. So, this book challenged my preconceived images of these characters.
Second, this book is long. It is divided into four parts. The first two parts were more familiar (maybe) and were a little easier to read. They told of Arthur’s early education under Merlin, pulling the sword from the stone, and establishing the Round Table - the glory days. Part three tackles the love triangle between Arthur, a Gwen, and Lancelot; the quest for the Holy Grail; and the rise of Mordred. Part four got a little tedious describing the fall of Arthur’s reign, the destructive force of lies and secrets, and the power of evil. This section challenged me with some very deep theological and philosophical musings amid the battles among friends and family.
Finally, this book is written using a Middle English wordings and geographic dialect. I had to look up many words (not all definitions could be found) to really understand some things, but was generally able to follow the story. The author also frequently talked directly to the reader which took some getting used to. The writing style definitely challenged my vocabulary and ability to follow transitions from author speaking to characters.
One last thing, the ending was left somewhat open to interpretation and imagination. I choose to believe the happiest of the possible outcomes. I’m glad I read this book, but i think I’ll go read something a little easier next!
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Reviewed in the United States on March 22, 2020