Aquacide — What's a Good Overall Weed and algae Control Option for small a pond?


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A Good Overall Weed & Algae Control Option for Small Ponds

Published by Jamie Markoe on January 07, 2014 0 Comments Weedtrine-D Liquid

A customer recently contacted us regarding weed & algae control. Below is the question and our response.


I have 2 ponds with a couple of types of vegetation and some algae growing in them. Nothing invasive, just native species, but they are getting a bit out of control. What do you recommend for general treatment for each of these situations? The ponds are cold, very clear water, 1-3 ft deep and about 20’ x 20’ in size. Fish, frogs and kids spend lots of time in them. Thank you.

EE, Jackson, WY


Weedtrine-D Liquid is a fast-acting aquatic herbicide that will affect most weeds and algae it makes good contact with. Weedtrine-D Liquid can be used anytime good contact with weeds and algae can be made and it will not harm fish, frogs or kids!

A 20’ x 20’ pond with a maximum 3’ depth is 400 sq. ft. with an average 2’ depth and would require 13 oz. of Weedtrine-D Liquid per treatment. For best results, mix 13 oz. of Weedtrine-D Liquid with enough water to make ½ gallon of solution and top with 1 oz. of Cygnet-Plus Liquid (surfactant). ½ gallon of solution will treat your pond one time. Repeat treatment may be needed to make good contact with all the foliage. 

AquaClear Pellets are a second option that are a natural, beneficial bacteria.  This option will not kill anything but will strip nutrients from the pond that weeds and algae thrive on.  By reducing the nutrient level the amount of new growth should be significantly reduced.  Your 20' x 20' pond would require 1/4 lb. (50 pellets) of AquaClear Pellets per treatment.  Apply for a minimum of 4 weeks or until desired water quality is achieved.

Please feel free to e-mail me or post questions you may have and I will respond accordingly.

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