Alligare Fluridone Half Gallon, 64 oz
Alligare Fluridone Half Gallon, 64 oz
$1,34999
Take the long view on stubborn pond and lake weeds with Alligare Fluridone, a liquid aquatic herbicide for freshwater use. Its 41.7% fluridone formula moves through susceptible plants for systemic control, with whitening symptoms starting in 7 to 10 days and results building over extended contact time.
- Visible whitening; new growth can bleach in 7 to 10 days
- Systemic control; reaches shoots and roots of susceptible weeds
- Long-residual fit; 45 days or more supports stronger control
- Freshwater range; fits ponds, lakes, reservoirs, and canals
- Flexible water use; 150 ppb or less allows immediate swimming, drinking, and fishing
- Whole-site planning; built for broad pond and lake treatment
Choose a complete aquatic weed program when repeat spot treatments are not enough.
Always follow full label directions.
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Product Description
Long-Residual Control for Hard-to-Manage Aquatic Weeds
Alligare Fluridone is a strong fit when quick surface burn-down is not enough. This liquid aquatic herbicide moves through susceptible plants, making it useful for whole-pond and whole-lake programs where longer contact time matters. It works best in freshwater sites with limited discharge, where the treatment can work through duckweed, hydrilla, pondweed, milfoil, coontail, and other susceptible weeds.
Key Features & Benefits
| Feature | Benefit |
|---|---|
| 41.7% fluridone | Systemic control for susceptible freshwater weeds. |
| Surface or subsurface use | Fits multiple application setups. |
| 45-day contact target | Gives the treatment time it needs to work through the plant. |
| Immediate use at 150 ppb or less | Swimming, fishing, and drinking water use can continue immediately. |
| Not corrosive to equipment | Easier fit for spray and metering systems. |
Directions & Dosing Snapshot
| Use Case | Label Rate | Application Notes |
|---|---|---|
| Ponds | 45 to 90 ppb | Apply to the full pond surface; use higher rates for dense infestations, difficult species, and ponds under 5 acres with average depths under 4 feet. |
| Whole lakes or reservoirs, single application | 10 to 90 ppb | Use lower rates for Eurasian watermilfoil, curlyleaf pondweed, or greater selectivity; do not exceed 150 ppb total per annual growth cycle. |
| Whole lakes or reservoirs, split or multiple | Initial 6 to 50 ppb | Maintain a sufficient concentration for 45 days or longer and verify it over time with water analysis. |
| Partial lakes or reservoirs | 30 to 150 ppb more than 1/4 mile from a functioning potable water intake; less than 20 ppb within 1/4 mile | If greater than 20 ppb is needed, the application must be at least 1/4 mile from the intake. |
| Dry or dewatered aquatic sites | Maximum 2 qts. per surface acre per annual growth cycle | Apply evenly to sediments with 30 to 100 gallons of spray solution per surface acre. |
| Canals | Static canals: 1 to 2 qts. per treated acre; moving water canals: maintain 15 to 40 ppb for at least 45 days | Reduce flow when possible and use split, multiple, or metered applications to hold the target concentration. |
Always follow the full label for complete directions, restrictions, and site-specific requirements.
Comparison Table
| Alligare Fluridone | Fast contact aquatic herbicide | Pellet fluridone formulation | Beneficial microbe maintenance program | |
|---|---|---|---|---|
| Approach | Systemic liquid fluridone | Contact chemistry | Pellet fluridone | Biological organic-load support |
| Visual timing | 7 to 10 days to whitening symptoms | Varies by label | Varies by label | Gradual maintenance |
| Best-fit waterbody | Whole ponds, lakes, reservoirs, canals | Spot or partial jobs; varies by label | Placement-focused sites | Maintenance-focused ponds and lakes |
| Application style | Surface or subsurface liquid | Varies by label | Pellet placement or broadcast | Routine dosing |
| Best-fit goal | Long-residual susceptible weed management | Visible top-growth management | Placement-driven fluridone management | Organic-load reduction and maintenance |
Why Choose a Liquid Fluridone Program?
- Systemic reach: Fluridone moves through susceptible plants instead of only affecting exposed growth.
- Longer management window: Extended contact time supports broad pond and lake planning instead of a quick cosmetic burn-down.
- Flexible site fit: One liquid program can fit ponds, lakes, reservoirs, canals, and dry or dewatered aquatic sites.
This product is distributed by NewTechBio as an authorized reseller. Specifications, treatment rates, and performance claims are sourced from the official EPA-approved manufacturer label and published documentation. NewTechBio does not independently verify manufacturer claims. Always read and follow the label.
Last updated for listing accuracy: 05/18/2026
What is Alligare Fluridone and when is it the right aquatic herbicide?
Will Alligare Fluridone control duckweed, watermeal, hydrilla, pondweed, and milfoil?
Does Alligare Fluridone kill algae or just aquatic weeds?
How fast does Alligare Fluridone work in a pond or lake?
How much Alligare Fluridone do I need per acre or per pond?
Can I swim, fish, or use treated water right after application?
What irrigation or potable water intake restrictions matter before buying?
Is Alligare Fluridone better for whole pond treatment or partial lake treatment?
When should I choose liquid fluridone instead of a fast contact aquatic herbicide?
Why do duckweed and pond weeds come back, and should I add beneficial microbes?
Products related to this item
Product Details
Important Information
SDS: View Safety Data Sheet (PDF)
LABEL (Directions & Rates): View Product Label (PDF)
Comments/Other: Review the Product Label and SDS for directions, rates, and safety information.
Certifications / Registrations: EPA registered
Origin: Origin Unverified
Feature: Liquid concentrate formulation
Product Form: Liquid
Product Details
Long-Residual Control for Hard-to-Manage Aquatic Weeds
Alligare Fluridone is a strong fit when quick surface burn-down is not enough. This liquid aquatic herbicide moves through susceptible plants, making it useful for whole-pond and whole-lake programs where longer contact time matters. It works best in freshwater sites with limited discharge, where the treatment can work through duckweed, hydrilla, pondweed, milfoil, coontail, and other susceptible weeds.
Key Features & Benefits
| Feature | Benefit |
|---|---|
| 41.7% fluridone | Systemic control for susceptible freshwater weeds. |
| Surface or subsurface use | Fits multiple application setups. |
| 45-day contact target | Gives the treatment time it needs to work through the plant. |
| Immediate use at 150 ppb or less | Swimming, fishing, and drinking water use can continue immediately. |
| Not corrosive to equipment | Easier fit for spray and metering systems. |
Directions & Dosing Snapshot
| Use Case | Label Rate | Application Notes |
|---|---|---|
| Ponds | 45 to 90 ppb | Apply to the full pond surface; use higher rates for dense infestations, difficult species, and ponds under 5 acres with average depths under 4 feet. |
| Whole lakes or reservoirs, single application | 10 to 90 ppb | Use lower rates for Eurasian watermilfoil, curlyleaf pondweed, or greater selectivity; do not exceed 150 ppb total per annual growth cycle. |
| Whole lakes or reservoirs, split or multiple | Initial 6 to 50 ppb | Maintain a sufficient concentration for 45 days or longer and verify it over time with water analysis. |
| Partial lakes or reservoirs | 30 to 150 ppb more than 1/4 mile from a functioning potable water intake; less than 20 ppb within 1/4 mile | If greater than 20 ppb is needed, the application must be at least 1/4 mile from the intake. |
| Dry or dewatered aquatic sites | Maximum 2 qts. per surface acre per annual growth cycle | Apply evenly to sediments with 30 to 100 gallons of spray solution per surface acre. |
| Canals | Static canals: 1 to 2 qts. per treated acre; moving water canals: maintain 15 to 40 ppb for at least 45 days | Reduce flow when possible and use split, multiple, or metered applications to hold the target concentration. |
Always follow the full label for complete directions, restrictions, and site-specific requirements.
Comparison Table
| Alligare Fluridone | Fast contact aquatic herbicide | Pellet fluridone formulation | Beneficial microbe maintenance program | |
|---|---|---|---|---|
| Approach | Systemic liquid fluridone | Contact chemistry | Pellet fluridone | Biological organic-load support |
| Visual timing | 7 to 10 days to whitening symptoms | Varies by label | Varies by label | Gradual maintenance |
| Best-fit waterbody | Whole ponds, lakes, reservoirs, canals | Spot or partial jobs; varies by label | Placement-focused sites | Maintenance-focused ponds and lakes |
| Application style | Surface or subsurface liquid | Varies by label | Pellet placement or broadcast | Routine dosing |
| Best-fit goal | Long-residual susceptible weed management | Visible top-growth management | Placement-driven fluridone management | Organic-load reduction and maintenance |
Why Choose a Liquid Fluridone Program?
- Systemic reach: Fluridone moves through susceptible plants instead of only affecting exposed growth.
- Longer management window: Extended contact time supports broad pond and lake planning instead of a quick cosmetic burn-down.
- Flexible site fit: One liquid program can fit ponds, lakes, reservoirs, canals, and dry or dewatered aquatic sites.
SDS: View Safety Data Sheet (PDF)
LABEL (Directions & Rates): View Product Label (PDF)
Comments/Other: Review the Product Label and SDS for directions, rates, and safety information.
Certifications / Registrations: EPA registered
Origin: Origin Unverified
Feature: Liquid concentrate formulation
Product Form: Liquid
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Reviews
Verified Purchase
This is my 4th time ordering this stuff and it works. Every year my pond gets covered so I apply it right before that happened in early May. After a lot of research I ordered this and the NTMax. It is easy to apply and does not harm fish but it mostly kills all weeds. I mix in a 5 gallon pail and pour it all around in 2 doses 20 days apart. Very happy with the results.
Verified Purchase
Starts working on the underwater weeds within a week. Does a good job.
Verified Purchase
This is used at our drinking water reservoir so I used it at my pond. Worked very well on the sylvania and other weeds.
Verified Purchase
The bottom of my pond was covered with submerged vegetation covering every square inch. This removed most of it within a few weeks. I highly recommend Alligare fluridone.
Verified Purchase
I use this on my 1/4 farm ponds (4 of them) and it works like a charm.
Verified Purchase
Not using this until June but have used it b4. These guys have the best price and the best customer care I have ever experienced!
Verified Purchase
Purchased for duckweed and watermeal and directions were confusing. Called in to newbio and they were excellent. Pond looks great after 30 days. No more floating green weeds!
Verified Purchase
I bout too much and was able to get 2 years out of it to control DuckWeed. Expensive but eliminates all the DuckWeed. Excellent product and customer service was wonderful!
Verified Purchase
Had a major duckweed problem. Started with 2 quarts the first treatment, 1 quart 21 days later and last quart 21 days after that. Duckweed starting changing to yellow after 10 days and then became green again a few days later and I started to feel like it was not going to work. After 26 days it was gone completely. Great stuff!
