99% Copper Sulfate Pentahydrate. To be used for large bodies of water, not small decorative ponds, water features, or pools.
Controls most species of algae like filamentous, string algae and swimmers itch. Copper Sulfate should be used as a pond algae treatment on actively growing algae in water temperature above 60F.
Most effective when cast out on top of thick floating algae mats. Be aware of how much vegetation you are treating at one time. Eliminating too much at once can deplete the oxygen levels too quickly for your fish.
Granular Copper Sulfate, 5 lbs
DO NOT use in bodies of water that include Koi, Goldfish, Trout, or Grass Carp. These types of fish are sensitive to copper sulfate products.

Product Description

Crystal Blue Copper Sulfate Algae Control

Copper Sulfate is a granular pond algae control product. This product controls most species of algae like filamentous and string algae. When treating excessive pond growth it is always important to treat half the pond at a time to avoid depleting the oxygen too quickly for the fish.

Safe To Use With:

Pets & Wildlife
Most Fish
Swimming
Irrigation
Potable Water

Pond Algae Control Before Pond Treatment After Pond Treatment

Is copper safe to use with fish?

This product is safe for livestock, recreation, potable water and not harmful to most fish when used according to label directions. There are a few exceptions, Copper sulfate is not meant for small deco ponds and is toxic to Koi, Golfish and Trout.

How often should I use Copper Sulfate?

Copper sulfate algae control should be used when algae is present. Wait 14 days between applications and only treat a 1/2 or 1/3 of the pond at a time to recover oxygen levels.

How do I apply this product?

Apply by casting granulars, dragging behind boat in burlap, or dissolve and spray.

How much product do I use?

1.8 lbs of copper will treat up to 15,000 square feet.

When is the best time to treat my pond algae?

Pond algae should be treated when algae is actively growing and water temperatures are above 60F.

<span style="box-sizing: border-box; display: block; border: 2px solid #ffffff; background: rgba(145, 145, 145, 0.4); width: 35px; height: 35px; border-radius: 50%; outline-style: none; cursor: pointer;" data-position="triggerHorizontal" data-inline-content="

DO NOT USE WITH

Do not use with goldfish, koi, trout, or grass carp due to sensitivities