SKU: 13132813712
granular herbicide

granular herbicide UPL Hydrothol 191 Granular Pond Algaecide and Herbicide

Sale price$23.41 Regular price$26.01
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  • CAN

Ships within 48 hours · Estimated delivery Oct 13 - Oct 18

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Description

granular 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: 13132813712

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4.5 ★★★★★
Based on 26 reviews
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Verified Purchase
Dana K.
Battle Creek, US
★★★★★ 5
I highly recommend this pillow, it’s great for someone with neck or back problems.
Size: Queen (Pack of 1), Size: Queen (Pack of 1)
I absolutely love this pillow! When it says it’s adjustable it definitely means that. When you first get it, it’s hard to believe that it’s going to be anything but put it in the dryer for a few minutes and it becomes so large. You will definitely have to remove some of the stuffing unless you like a really large fluffy pillow. The stuffing is high-quality and once it has been put into the dryer it becomes a fibrous type material that can be fluffed over and over and go back to the same size. It seems to be a high-quality cover on the outer portion and is thick and has a slight cooling affect. It has a separate cover on the inner portion covering the foam stuffing. I ordered this because I have neck problems and it has been super comfortable for me because I’m able to adjust it multiple times depending on my needs for the particular night when I lay down. Having the extra stuffing means that if the pillow does happen to go flat I can always add the extra that I took out when I received it. It did have a slight odor when it first came, but after putting it in the dryer, it went away immediately. I do think that’s only due to the plastic that it’s shipped in not anything with the pillow. I think this pillow is well worth it price and I would highly recommend it for anyone that is a side or back sleeper or has any type of neck problems.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 3, 2026
C
Verified Purchase
Caitlyn
Omaha, US
★★★★★ 5
Amazing!
Size: King (Pack of 1)
Such a great pillow I’m buying another one! You can add or subtract stuffing to your liking. It’s really nice quality, quilted and soft. Best pillow ever. Super comfy and great sleep. Pretty firm with all the stuffing. Perfect the way it came with stuffing on the side. My husband loves it and now I want one.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 15, 2026
A
Verified Purchase
Alli
Dallas, US
★★★★★ 5
Totally worth the money
Size: King (Pack of 1), Size: King (Pack of 1)
Right off the bat, the packaging is absolutely adorable and felt like I was buying a premium product. I love that this pillow is adjustable and as a side sleeper, I needed a pillow that is both firm and supportive of my neck. This hits all the boxes. We will be buying more of these for our bed!
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Reviewed in the United States on June 1, 2026
I
Verified Purchase
Ilona C. Frankel
San Leandro, US
★★★★★ 5
Best pillow ever!!!
Size: Sapphire Queen
I have actually tried dozens and dozens of pillows in my life, and dozens in the past three years, but this is it. Some cheap, some very very expensive, and some very famous brands. This one beats them all. So awesome and comfortable (side sleeper). I tried one and loved it so much I ordered a second right away. It is exactly what I've been searching for forever!!! Stays in shape, extremely comfortable. Only thing is you definitely need a 32" pillowcase to cover it, and I wish they made a 34" pillowcase, but no luck. I used the pillow the same night and it's definitely worth the money. No neck pain, super squishy but supportive, and no odor.
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Reviewed in the United States on October 31, 2025
S
Verified Purchase
Shops Too Much
Fort Morgan, US
★★★★★ 5
Great pillow
Size: Sapphire King, Size: Sapphire King
Super comfy pillow. Fluffs up without any issues and it was the first night in a long time I wasn't allover the bed trying to get comfortable. I appreciate the fact that the material in the pillow can be washed. The prefill was perfect for me so I did not need to remove or add but I like the option to do so. 10/10
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Reviewed in the United States on April 21, 2026

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