SKU: 93498981979
hydrothol granular aquatic herbicide

hydrothol granular aquatic herbicide Hydrothol Lake Herbicide Granular 20 pounds by Lake Restoration

Sale price$20.51 Regular price$22.79
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Ships within 48 hours · Estimated delivery Jul 15 - Jul 20

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Description

hydrothol granular aquatic herbicide Hydrothol Lake Herbicide Granular 20 pounds by Lake RestorationHydrothol Granular with alkylamine endothall 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. May be harmful to fish at recommended application rates. Aquathol with a boost! The physical form, mode of action, and general usage of Hydrothol Granular are similar to Aquathol

Hydrothol Granular with alkylamine endothall 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. May be harmful to fish at recommended application rates.

Aquathol with a boost!

The physical form, mode of action, and general usage of Hydrothol Granular are similar to Aquathol Super K Granular. Where fish are present, application of Hydrothol Granular at rates over 0.3 ppm should be used only for spot treatments, narrow margins, or where some fish kill is acceptable. Do not treat more than 10% of a lake or pond at one time at application rates above 1.0 ppm.

When treating lakes or ponds with Hydrothol Granular, begin at shoreline and work toward center. Apply parallel to the shoreline. This will herd fish away from the treated area into deeper, untreated portions of the lake or pond.

Treat your entire pond for algae.

Lakes and Ponds:

Algae can be controlled with as little as 0.2 ppm of Hydrothol Granular when the entire pond is treated. For longer term control or spot treatments, use 0.5 to 1.5 ppm. Repeat treatment when growth reappears. For floating mats, scatter uniformly over the surface of the mat.

Weeds can be controlled with 0.5 to 3.0 ppm of Hydrothol Granular.  For most Pondweeds, 1.0 to 2.0 ppm will give excellent control.  When treating an entire pond you can use 25% to 50% less material.  

To determine pounds of Hydrothol Granular to use per 1,000 sq. ft.:

(application rate in ppm) x (average depth in feet) x (1.25) 

To use 1.5 ppm at an average depth of 4.0 feet:

1.5 x 4.0 x 1.25 = 7.5 pounds per 1000 sq. ft.

Canals and Ditches:
Irrigation canals or drainage ditches will require 3.0 to 5.0 ppm of Hydrothol Granular.

To determine pounds of Hydrothol Granular in canals and ditches:

(application rate in ppm) x (1000's of linear ft.) x (cross section in sq. ft.) x (1.25) 

To use 3.0 ppm over 2,000 feet with a cross section of 15 sq. ft.:

3.0 x 2.0 x 15 x 1.25 = 112.5 lbs.

Treat heavy infestations in sections of 1/3 to 1/2 of the total weed volume to avoid oxygen depletion.  Allow 5 to 7 days before continuing to untreated sections.

See Water Use Restrictions (Days).

Shipping Notes
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Exchange/Return Notes
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  • Final sale items are not eligible for returns or exchanges.
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SKU: 93498981979

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Japhy Parker
Lexington, US
★★★★★ 5
Perfect fit for 2025 Honda CR-V Hybrid Sport
Size: 2023-26 CRV 2.0L Hybrid
This filter pack was a perfect fit when needing to replace the cabin and engine filter for my 2025 CR-V Hybrid. My Honda dealer wanted $140 ($70 ea.) to replace both filters while this pack only cost $30. The cabin filter was a piece of cake, but the engine filter took a bit of an effort. Nothing too crazy, though. Definitely worth the money.
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Reviewed in the United States on April 13, 2026
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Don Angelo
Port Orchard, US
★★★★★ 5
Filters
Size: 2023-26 CRV 2.0L Hybrid
Perfect fit!
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Reviewed in the United States on April 1, 2026
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MikeM
West Palm Beach, US
★★★★★ 5
Great product!
Size: 2023-26 CRV 2.0L Hybrid
Fit my 2024 Honda CRV perfectly. Quality seems to be as good as OEM. Dealer wanted $50 for each filter plus installation. Took me 15 minutes to do both watching videos.
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Reviewed in the United States on March 6, 2026
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Bruce Gustafson
Bozeman, US
★★★★★ 5
do it yourself Honda filters
Size: 2023-26 CRV 2.0L Hybrid
Had my 30k service done the other day - and was time to change inside and engine air filter - dealer cost was $190 to do both - saved my self $153 - took less than 10 minutes to change myself. Products looked identical to factory filters.
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Reviewed in the United States on May 22, 2026
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Scubachick
Lexington, US
★★★★★ 5
Perfect fit, easy replacement
Size: 2023-26 CRV 2.0L Hybrid
Just installed both filters in our 2023 CRV hybrid 2.0L Fit was perfect and installation simple for both filters. No tools required for cabin filter and only a phillips screwdriver for engine filter An easy money saving project with minimal time required
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Reviewed in the United States on May 24, 2026

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