Webb's Water Gardens
Mon-Fri 9am-5pm EST
Your Cart
Quick Store Search
Online Store Search
Webb's Water Gardens

Biosafe GreenClean Algaecide

Through the power of oxidation, GreenClean Granular Algaecide breaks down algae cells on contact!

Its unique, organic chemistry immediately begins fighting algae blooms and releasing vital oxygen into the water as it biodegrades. This solution can be used as a curative or preventative treatment in any water feature. Formulated without the use of harsh chemicals or chlorine, you will be worry free because nothing negative can effect your aquatic ecosystem. Trust GreenClean to immediately kill algae in any water feature around your home including ponds containing fish, plants, and aquatic life. GreenClean is an EPA registered, organic algaecide, so you can feel good about what is in your water.

  • Controls string algae in ponds, waterfalls, streams, and rocks
  • Safe for use around pets, birds, fish, and aquatic plants
  • Copper alternative
  • Works on contact

How Does GreenClean Granular Work? GreenClean is a granular algaecide with an activated peroxygen chemistry that works through a powerful oxidation reaction to break down algae cells on contact. An added benefit, the process releases oxygen into the water as it works to eliminate algae. 

I Have Fish In My Pond: Can I Use GreenClean? GreenClean will not harm fish or aquatic life. GreenClean once diluted in water is non-harmful to animals such as birds, bees, and pets. 

Can I Use GreenClean On My Waterfall? Yes, as a contact algaecide the granules need to make contact with the algae to be effective. Our recommendation for treating waterfalls is to turn the pumps off, apply GreenClean directly to the algae, and then turn them back on after 20 minutes. 

Will GreenClean Affect The pH Level? GreenClean will raise the pH up to 1 unit. Although this will comeback down on its own within about a week. Test pH prior to using and apply in the morning. 

Note: This Product is Toxic to Birds in Raw Form

Easy Peel Back Label Instructions on container

GreenClean Application Rates
Pond Size High Curative Rate (Green Water Algae) Low Curative Rate (Green Water Algae) String Algae
50 gallons 1 tbs .5 tsp 1 tbs
100 gallons 1.5 tbs 1 tsp 1.5 tbs
500 gallons .5 cup 1.5 tbs .5 cup
1,000 gallons 1 cup 3 tbs 1 cup
5,000 gallons 5 cups 1 cup 5 cups
10,000 gallons 10 cups 2 cups 10 cups

Size Options:

  • 2.5 lbs (treats up to 5,000 gallons)
  • 8 lbs (treats up to 16,000 gallons)
  • 20 lbs (treats up to 40,000 gallons)
  • 50 lbs (treats up to 100,000 gallons)

MM Closure Instruction Life-Latch (for 8 lbs, 20 lbs & 50lbs containers)

Webb's SKU:
Your Price:
$21.99 $19.95 (Save 9%)
Pond Points:
50 Worth $0.50
Stock Info:
In Stock
Your Total:


Green Clean Algaecide 2.5 lb (MPN 3002-2.5)
Green Clean Algaecide 2.5 lb
SKU: 16025
$21.99 $19.95 | 50 Points | In Stock
Green Clean Algaecide 8 lb (MPN 3002-8)
Green Clean Algaecide 8 lb
SKU: 16004
$46.99 $39.95 | 100 Points | In Stock
Green Clean Algaecide 20 lb (MPN 3015-20)
Green Clean Algaecide 20 lb
SKU: 16002
$79.99 $79.95 | 200 Points | In Stock
Green Clean Algaecide 50 lb (MPN 3015-50)
Green Clean Algaecide 50 lb
SKU: 16001
$144.99 $139.95 | 350 Points | In Stock

You Might Also Like...

Microbe-Lift PL Beneficial Bacteria 1 gallon
SKU: 22345
$87.74 $70.19 (Save 20%)
175 Points | In Stock
Laguna Algae Brush, Small
SKU: PT936
$20.99 $17.84 (Save 15%)
55 Points | In Stock
Laguna Algae Rake
SKU: PT938
$23.99 $20.39 (Save 15%)
63 Points | In Stock
Aqua Ultraviolet 8 watt UV, 3/4" barbs, black
SKU: 00001
$396.00 $277.20 (Save 30%)
693 Points | In Stock
Special pricing on this item is active. Buy today to save!

We Have The Largest Selection of Pond Supplies and Equipment Available on the Planet

© 1981-2023 Webb's Water Gardens, all rights reserved worldwide.
Kryptronic eCommerce, Copyright 1999-2023 Kryptronic, Inc. - https://kryptronic.com/ [0.128762 / 15.887825]