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Lake Weed Control
Aquatic Herbicides & Algaecides

Hydrothol 191

  • Hydrothol 191 is a granular aquatic herbicide and algaecide for lakes only
  • Controls nearly all lake weeds
  • Works best on firm, sandy lake bottoms
  • Hydrothol 191 should be spread evenly throughout treatment area when plants are present
  • Most effective when applied on a calm day
  • Hydrothol 191 is EPA approved
  • No swimming restrictions apply
  • When applying Hydrothol 191, we recommend using a Broadcasting Spreader
  • Shipping Information



Hydrothol 191 (10 lbs)

Treats 1,000 - 4,000 square feet

PRICE: $61.00

Quantity:  



Hydrothol 191 (40 lbs)

40 lb. Pail (treats 4000 - 16000 sq. ft.)
Save $35 on orders of 4 or more.

PRICE: $169.00

Quantity:  






Broadcasting spreader
$21.00