SKU: 62020916539
hydrothol granular aquatic algaecide and herbicide

hydrothol granular aquatic algaecide and herbicide UPL Hydrothol 191 Granular Pond Algaecide and Herbicide

Sale price$21.74 Regular price$24.16
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  • CAN

Ships within 48 hours · Estimated delivery Aug 2 - Aug 7

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Description

hydrothol granular aquatic algaecide and herbicide UPL Hydrothol 191 Granular Pond Algaecide and HerbicideHydrothol 191 Granular Algaecide Herbicide is a selective, rapid acting, contact herbicide and algaecide. Controls submersed weeds and algae in lakes, ponds, irrigation canals, and drainage ditches. Works rapidly enough to be effective in both still and slow moving water. EPA approved Works quickly Not swimming or fishing restrictions Works on both Algae and Pondweeds! Available in a 20 pound bag only. *Cannot be shipped to: AK, CA, CT, DC, DE, HI,

Hydrothol 191 Granular Algaecide/Herbicide is a selective, rapid-acting, contact herbicide and algaecide. Controls submersed weeds and algae in lakes, ponds, irrigation canals, and drainage ditches. Works rapidly enough to be effective in both still and slow-moving water. 

  • EPA approved
  • Works quickly
  • Not swimming or fishing restrictions
  • Works on both Algae and Pondweeds!

Available in a 20-pound bag only. 

*Cannot be shipped to: AK, CA, CT, DC, DE, HI, MA, ME, NJ, NY, PR, RI, VT, WA 

Application Rate

 

For Algae Control  60 lbs treat up to 1 surface area 4 feet-deep
For Aquatic Weed control  120 lbs treat up to 1 surface area 4 feet-deep 

 

Direction for use:

To apply Hydrothol 191 Granular, simply broadcast the granules uniformly over the water surface above the target plant, by hand or with the use of a mechanical spreader.

              
Pro Tip:

Heavy algae or pondweed infestations should be treated in sections 5 to 7 days apart to avoid oxygen depletion from decomposing dead vegetation.

Water treated with Hydrothol 191 Granular should not be used for irrigation or human and animal consumption for 7 to 25 days depending on the application rate.

Please see label for complete product information. 

Can not be shipped to PR, HI, AK, or Canada

 Product SDS Sheet & Label

                                                                 

Hydrothol 191 Granular SDS Sheet                    Hydrothol 191 Granular Label

               

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 62020916539

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Michael
Phoenix, US
★★★★★ 5
Great filter for dusty environments.
Size: 20x25x1
What a wonderful filter! Did a great job keeping this Arizona house dust down to a minimum. Yes, I will buy it again.
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Reviewed in the United States on June 1, 2026
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Jamie lee
Birmingham, US
★★★★★ 5
Good Filters
Size: 16x25x1
Good filters. Gets the job done and price was not bad either.
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Reviewed in the United States on May 18, 2026
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Sophie A.
Grantham, US
★★★★★ 5
Absolutely love this purse!
Color: Nude
Absolutely love this purse! The material feels and looks lux. Very smooth material, and it goes with many outfits and events. Has so much room inside and a pocket as well. Very versatile, you can use it as a purse or a clutch. Does not feel heavy and is very sleek to carry. Definitely picking up in another color!
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Reviewed in the United States on November 24, 2025
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Verified Purchase
Yvette C.
Natrona Heights, US
★★★★★ 5
Bigger than I thought
Color: Black
I love this bag! The magnetic closure is strong. I kinda overfilled my bag and with a little bit of adjusting, it kept closed. I fit my mini wallet, tin of Altoids, set of keys, mini bottle of perfume, box of cigs and lighter. I even had enough space for my phone and charger. The chain strap is a little uncomfortable but it's removable, so no biggie.
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Reviewed in the United States on May 20, 2026
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Verified Purchase
Chris
Charlottesville, US
★★★★★ 4
Generous storage & accessibility
Color: Black
This purse is very soft and plain with no embellishments. It is not shiny. It is just what I wanted because it did not detract from my gown. It is very practical and convenient because the clutch opens fully at the top so that everything stored inside can be easily seen rather than having to reach in the top and feel around inside a small clutch. It worked perfectly for me and could be useful even in non-formal situations. The magnetic closure is adequate. Storage is generous.
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Reviewed in the United States on May 31, 2026

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