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🌊 Clear waters, cleaner future — Hydrothol keeps your pond pristine and your lifestyle on point!
Hydrothol Aquatic Herbicide 20# Bag delivers 11.2% Endothall in granular form, providing fast-acting, broad-spectrum control of algae and aquatic weeds. Its environmentally sound formula dissipates within seven days without harming fish or aquatic habitats. Ideal for spot treatments in slow-moving or murky waters, Hydrothol enhances water quality and recreational access, backed by over 30 years of trusted use and strong customer satisfaction.
| ASIN | B00QXNR7AE |
| Active Ingredients | Herbicide |
| Best Sellers Rank | #14,946 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #60 in Water Garden & Pond Treatment |
| Brand | United Phosphorus Inc |
| Brand Name | United Phosphorus Inc |
| Coverage | 1000 square feet |
| Customer Reviews | 4.1 out of 5 stars 478 Reviews |
| Global Trade Identification Number | 39270356680801 |
| Item Form | Granule |
| Item Weight | 20 pounds |
| Liquid Volume | 9463.52 ml |
| Manufacturer | United Phosphorus Inc |
| Part Number | 6020396 |
| Unit Count | 320 Ounce |
W**L
Great product
Works great at controlling growth on the bottom of river behind my house. Helps kill invasive aquatic plants and weeds.
R**W
Handling Invasive Aquatic Species
The product works as intended. It is extremely important to follow instructions and receive authorization for use from State Authorities before using.
C**N
Weeds gone
Why did you pick this product vs others?: Works great on lake weeds. Unfortunately expensive and takes a full bag to do the job.
A**R
Lowest price
Arrived fast, in a box, lowest price
M**I
Bad product
I put 20 pound down as instructions. Did not work as advertised. Would like my 119 bucks back.waste of time and money.DO NOT BUY this product .
J**R
Works well on curly leaf pondweed
Seems to work on curly leaf pondweed -- especially when treated early enough (about 50F water temp).
A**N
Pond Problem Solver
Cleared out stubborn algae in just a few days. Easy to spread and works fast without harming the fish.
M**H
Does okay
This is my second bag of this. I use to control weeds off the dock in Minnesota. Seems to do a good job when applied early in the spring then reapplied a few weeks later. Does not help with tougher plants like cattails.
Trustpilot
1 month ago
1 week ago