Alligare Argos Algaecide and Herbicide 2 and a Half Gallon
Alligare Argos Algaecide and Herbicide 2 and a Half Gallon
$10488
Alligare Argos Algaecide and Herbicide is a liquid chelated copper treatment built for fast, dependable algae control in ponds, lakes, reservoirs, hatcheries, and irrigation waterways. It works on planktonic, filamentous, and benthic algae, performs well in hard water, and gives water managers a practical tool for cleaning up nuisance growth before it takes over the season.
- Fast response; planktonic algae can drop in 24 to 48 hours
- Broad algae fit; made for planktonic, filamentous, and benthic growth
- Hard-water ready; chelated copper stays available in tough water conditions
- Hydrilla utility; supports copper-based submerged weed control programs
- Flexible use sites; fits lakes, reservoirs, hatcheries, ditches, and canals
- Liquid concentrate; easy to measure, dilute, and apply
Choose Argos when you need quick algae knockdown with flexible use options.
Recommended companion treatment program
NT-MAX Lake & Pond Clarifier + Sludge & Muck Digester Rapidly restore crystal clear conditions in lakes, ponds, and lagoons using NT-MAX, a high-performance biological clarifier powered by….
After using Alligare Argos Algaecide and Herbicide 2 and a Half Gallon, wait about 5 days before applying NT-MAX Lake & Pond Clarifier + Sludge & Muck Digester.
Bundle savings may be available below when eligible.
Frequently bought together
FREE Shipping
In Stock - Ships Today!
Need help finding an alternative that can ship to your location? Call 800-509-0927.
Frequently bought together
Need Help?
(800) 509-0927
Products related to this item
Product Description
Professional Copper Control for Ponds, Lakes, and Waterways
When algae starts coating the water, clouding the pond, or building dense bottom growth, Alligare Argos helps you take control with a chelated liquid copper option built for broad aquatic use. It works in hard water and covers planktonic blooms, filamentous mats, and benthic growth while also giving managers a copper tool for Hydrilla treatment planning.
Key Features & Benefits
| Feature | Benefit |
|---|---|
| Chelated copper | Helps keep copper available in hard water conditions. |
| Liquid concentrate | Simple measuring, dilution, and transfer for spray or injection setups. |
| Fast response | Planktonic algae control can appear in 24 to 48 hours; filamentous response in 3 to 4 days. |
| Broad site fit | Useful in lakes, reservoirs, hatcheries, canals, ditches, and laterals. |
| Hydrilla utility | Supports depth-based planning when submerged weed pressure is part of the job. |
Directions & Dosing Snapshot
| Use Case | Label Rate | Application Notes |
|---|---|---|
| Planktonic algae | 0.2, 0.4, or 0.6 ppm = 0.6, 1.2, or 1.8 gal per acre-foot | Choose rate by density; keep at least 3 hours contact time in slow-flowing or quiescent water. |
| Filamentous algae | 0.2, 0.6, or 0.8 ppm = 0.6, 1.8, or 2.4 gal per acre-foot | Break apart heavy mats before treatment; keep at least 3 hours contact time. |
| Benthic algae (Chara/Nitella) | 0.4, 0.7, or 1.0 ppm = 1.2, 2.1, or 3.0 gal per acre-foot | Choose rate by density; do not exceed 3 gal per acre-foot per application. |
| Hydrilla control | 0.4 to 1.0 ppm copper; gallons per surface acre vary by depth | At 1-ft depth, 1.2 to 3.0 gal per surface acre; at 6-ft depth, 7.2 to 18.0 gal. |
| Chemigation systems | 0.20 to 1.0 ppm = 0.60 to 3.00 gal per acre-foot | Starts at 32 oz per 450 gal/min for 0.20 ppm; max 2.75 gal per 100,000 gal. |
Always follow the full label for complete directions, restrictions, and site-specific requirements.
Comparison Table
| Alligare Argos | Standard copper sulfate crystal program | Peroxide-based liquid algaecide | Maintenance-focused beneficial bacteria program | |
|---|---|---|---|---|
| Active ingredient / approach | Copper ethanolamine complex | Copper sulfate | Peroxide or peroxy chemistry | Beneficial microbes |
| Primary treatment style | Chelated liquid algaecide and herbicide | Traditional copper treatment | Contact cleanup option | Biological maintenance support |
| Time to visible change | 24 to 48 hours planktonic; 3 to 4 days filamentous | Varies by label | Varies by label | Varies by program |
| Application planning | Rate by ppm, acre-foot, depth, and target type | Varies by label | Varies by label | Varies by program |
| Best-fit job | Fast correction across larger water bodies | Traditional copper program | Short-contact cleanup strategy | Long-term maintenance strategy |
Why Choose Chelated Liquid Copper?
- Stays workable in hard water: The ethanolamine-chelated formula helps keep copper available where untreated copper can tie up faster.
- Fits professional routines: Liquid measuring, tank mixing, and water-column dosing make planning easier on larger jobs.
- Supports smarter maintenance: Use it for fast algae knockdown, then pair it with microbes and cleanup work to reduce repeat bloom pressure.
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: 04/25/2026
What is Alligare Argos and what problem is it built to solve?
Is Alligare Argos a good fit for ponds, lakes, canals, and potable water reservoirs?
How fast does Alligare Argos work on planktonic algae and filamentous algae?
How much Alligare Argos do I need per acre-foot for algae treatment?
Can Alligare Argos be used for Hydrilla control in ponds or lakes?
Can I swim, fish, irrigate, or water livestock after treatment?
Does Alligare Argos work in hard water?
When is the best time to apply Alligare Argos for spring pond algae control?
Why does pond algae keep coming back, and should I pair Argos with beneficial microbes?
How often can I retreat with Alligare Argos, and when is it not the right product?
Products related to this item
Product Details
SKU: NTBIO3744623-1
UPC: 192702500121
Category: Algaecides
Brand: Alligare
Weight: 28 lbs
Dimensions: 12 x 8 x 16 in
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: Ideal for spot treatments and shoreline management
Product Form: Liquid
Product Details
Professional Copper Control for Ponds, Lakes, and Waterways
When algae starts coating the water, clouding the pond, or building dense bottom growth, Alligare Argos helps you take control with a chelated liquid copper option built for broad aquatic use. It works in hard water and covers planktonic blooms, filamentous mats, and benthic growth while also giving managers a copper tool for Hydrilla treatment planning.
Key Features & Benefits
| Feature | Benefit |
|---|---|
| Chelated copper | Helps keep copper available in hard water conditions. |
| Liquid concentrate | Simple measuring, dilution, and transfer for spray or injection setups. |
| Fast response | Planktonic algae control can appear in 24 to 48 hours; filamentous response in 3 to 4 days. |
| Broad site fit | Useful in lakes, reservoirs, hatcheries, canals, ditches, and laterals. |
| Hydrilla utility | Supports depth-based planning when submerged weed pressure is part of the job. |
Directions & Dosing Snapshot
| Use Case | Label Rate | Application Notes |
|---|---|---|
| Planktonic algae | 0.2, 0.4, or 0.6 ppm = 0.6, 1.2, or 1.8 gal per acre-foot | Choose rate by density; keep at least 3 hours contact time in slow-flowing or quiescent water. |
| Filamentous algae | 0.2, 0.6, or 0.8 ppm = 0.6, 1.8, or 2.4 gal per acre-foot | Break apart heavy mats before treatment; keep at least 3 hours contact time. |
| Benthic algae (Chara/Nitella) | 0.4, 0.7, or 1.0 ppm = 1.2, 2.1, or 3.0 gal per acre-foot | Choose rate by density; do not exceed 3 gal per acre-foot per application. |
| Hydrilla control | 0.4 to 1.0 ppm copper; gallons per surface acre vary by depth | At 1-ft depth, 1.2 to 3.0 gal per surface acre; at 6-ft depth, 7.2 to 18.0 gal. |
| Chemigation systems | 0.20 to 1.0 ppm = 0.60 to 3.00 gal per acre-foot | Starts at 32 oz per 450 gal/min for 0.20 ppm; max 2.75 gal per 100,000 gal. |
Always follow the full label for complete directions, restrictions, and site-specific requirements.
Comparison Table
| Alligare Argos | Standard copper sulfate crystal program | Peroxide-based liquid algaecide | Maintenance-focused beneficial bacteria program | |
|---|---|---|---|---|
| Active ingredient / approach | Copper ethanolamine complex | Copper sulfate | Peroxide or peroxy chemistry | Beneficial microbes |
| Primary treatment style | Chelated liquid algaecide and herbicide | Traditional copper treatment | Contact cleanup option | Biological maintenance support |
| Time to visible change | 24 to 48 hours planktonic; 3 to 4 days filamentous | Varies by label | Varies by label | Varies by program |
| Application planning | Rate by ppm, acre-foot, depth, and target type | Varies by label | Varies by label | Varies by program |
| Best-fit job | Fast correction across larger water bodies | Traditional copper program | Short-contact cleanup strategy | Long-term maintenance strategy |
Why Choose Chelated Liquid Copper?
- Stays workable in hard water: The ethanolamine-chelated formula helps keep copper available where untreated copper can tie up faster.
- Fits professional routines: Liquid measuring, tank mixing, and water-column dosing make planning easier on larger jobs.
- Supports smarter maintenance: Use it for fast algae knockdown, then pair it with microbes and cleanup work to reduce repeat bloom pressure.
SKU: NTBIO3744623-1
UPC: 192702500121
Category: Algaecides
Brand: Alligare
Weight: 28 lbs
Dimensions: 12 x 8 x 16 in
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: Ideal for spot treatments and shoreline management
Product Form: Liquid
Popular Items
Reviews
Verified Purchase
I’ve been using for a few years. Really controls the algae from spreading. I use 1 gallon per month for about a half acre pond that is 12 feet deep at the deepest point but mostly shallow. Keeps the small beach area clean.
Verified Purchase
We have a 5 acre HOA lake that developed thick filamentous algae mats last spring due to regular resident fertilizer runoff among other things. About 30% of our lake became heavily covered with the matts as the weather warmed. We used our 30 gallon boat mounted sprayer mixed with 3 gallons of Argos and 60 oz of surfactant, which provided enough solution to cover the entire shoreline. This program worked well at controlling the algae for us last year, but as expected, the algae has returned again. And we expect this as there is little we can do about the fertilizer situation. I spoke with Rob at Newtechbio about our situation and he suggested a modified program for our lake. This year, in addition to the Argos application, we added Mako Bahamas dye to help block the sun penetration, along with NT-MAX clarifier microbes to help consume the fertilizer responsible for the persistent algae. As of today, the pond looks wonderful and crisp. The color is perfect and we are very please with the results. Great helpful customer service and products!
Verified Purchase
I use Argos and Hydrothol early in April to control Chara that has been creeping. Works great when you get to it early in the spring. First year I tried in August and no luck.
Verified Purchase
It does a good job. Need to apply it every 30 days for our lake.
Verified Purchase
The military base I was stationed at 2 years ago used this like water, so I gave it a shot. It does a fine job of killing tthe algae and the price is fair.
Verified Purchase
Excellent results. I used this product along with Cygnet Plus surfactant and the algae turned brown in one day. I am very happy with both products.
Verified Purchase
I walked along the edges and sprayed late afternoon and this morning everywhere I sprayed is brown. I used a 1/4 gallon of product with 3/4 gallon of water.
Verified Purchase
We have 5 farm ponds and use this on 4 of them,. A little goes a long way but do not use with sheep! They can't clear it.
Verified Purchase
This works well on floating algae but not Eurasian Watermilfoil. We have 2 RV park ponds. We use Argos for algae in our 1 acre and Sonar, NT-MAX Clarifier and black dye on the Milfoil infested pond. Products work really great. Will buy again!
Verified Purchase
Cleared our small pond up fast. Our pond was covered in algae and this was a God send.
