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.

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Crystal Blue Copper Sulfate Algaecide - Granular Aquatic Grade Copper Sulfate for Pond Algae Control - 5 Pounds

Product ID: 19409425

Details

Brand
Crystal Blue
Item Form
Granules
Item Weight
2.24 kg
Liquid Volume
5 liters
Number of Packs
1

🌊Ideal for large bodies of water

⏱️Fast-acting algae control

⚗️99% pure Copper Sulfate Pentahydrate

$100.82

Duties & taxes included

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Sold byAmazon British Virgin IslandsDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌿 Clear your pond, clear your mind — algae doesn’t stand a chance!

GRANULAR POWER - Easy-to-cast granules that settle on thick algae mats for maximum impact
FISH SAFE AWARENESS - Avoid use with sensitive species like Koi, Goldfish, Trout, or Grass Carp
PRECISION ALGAE CONTROL - Targets filamentous, string algae & swimmers itch with surgical accuracy
ECO CONSCIOUS APPLICATION - Use on actively growing algae above 60°F to protect your aquatic ecosystem
OPTIMIZED FOR LARGE PONDS - Formulated specifically for expansive water bodies, not small decorative ponds

Crystal Blue Copper Sulfate Algaecide is a 5-pound granular, aquatic-grade treatment with 99% pure Copper Sulfate Pentahydrate designed for effective algae control in large ponds. It rapidly targets common algae types like filamentous and string algae, working best in water temperatures above 60°F. This product is easy to apply on thick algae mats but should be used cautiously to maintain oxygen levels and avoid harm to sensitive fish species.

Specifications

ASIN	B000RUN0T6
Allergen Information	Abalone
Best Sellers Rank	#9,774 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #19 in Water Garden & Pond Treatment
Brand Name	Crystal Blue
Customer Reviews	4.4 4.4 out of 5 stars (2,470)
Global Trade Identification Number	00768980003335
Included Components	Copper Sulfate
Item Form	Granules
Item Type Name	Algaecide
Item Weight	2.24 kg
Liquid Volume	5 liters
Manufacturer	Sanco Industries
Manufacturer Part Number	333
Model Number	333
Number of Items	1
Number of Packs	1
Pet Type	Fish
Target Species	Fish
UPC	768980003335
Unit Count	1 Count
Warranty Description	See label

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