• Call (800) 479-6583
  • Mon-Fri 8am-5pm
  • |
  • Sat 9am-5pm

Hydrothol Granular Aquatic Herbicide

Free Shipping on All Orders

Hydrothol Granular Aquatic Algacide and Herbicide for algae and aquatic plant growth in aquatic sites.

Target Pests

Control of algae including planktonic filamentous and branched algae

For Use In

Drainage canals lakes and ponds


Use 3 to 136 lbs. per acre ft. of water

Coverage Area

Twenty pounds will cover 2,000-4,000 sq ft, depending on weed species and water depth.

Active Ingredient

Endothall 11.2%

How To

Apply as evenly as possible where target algae and plants are present.

Hydrothol Granular Aquatic Herbicide

Hydrothol Granular Aquatic Herbicide

If you are looking for a way to eliminated submersed weeds, there's no better product than Hydrolthol. Hydrothol Granular Aquatic Herbicide is very effective against a wide range of submersed weeds, also controls troublesome Algae at the same time.  It's a one-two punch that can't be beat.


Hydrothol has been sucessfully eliminating aquatic weeds for 25 years. The label says it all - pondweeds, naiads, milfoils, coontail, stargrass, hydrilla, canada waterweed and many algae types including the stubborn ones. A great choice for lakeshore weed & algae control. Apply with a hand scoop or hand held spreader.


Suggested Items To Add To Your Cart

Earthway Hand Spreader 3400


Homeowner Chemical Safety Kit


Product Q & A

Start typing your question and we'll check if it was already asked and answered. Learn More
No questions have been asked about this item. Be the first!

Customer Reviews

There are no reviews for this item. Write Review

Contact Us