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: 716496065

Details

Brand
Crystal Blue
Item form
Granules
Liquid volume
5 Liters
Manufacturer
Sanco
Unit count
1.0 Count

🛶Versatile application: broadcast, bag drag, or spray

⚗️99% pure Copper Sulfate Pentahydrate

🌡️Effective above 60°F water temp

699.70 DT

Duties & taxes included

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Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

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

PRECISION ALGAE CONTROL - Targets filamentous & string algae with surgical accuracy
FISH SAFE WHEN USED RIGHT - Protects most fish species—just avoid koi, goldfish, trout & grass carp
OPTIMIZED FOR LARGE PONDS - Designed for expansive water bodies, not small decorative ponds
OXYGEN CONSCIOUS TREATMENT - Treat half the algae at a time to maintain healthy oxygen levels for aquatic life
FLEXIBLE APPLICATION METHODS - Broadcast, burlap bag drag, or dissolve & spray for maximum convenience

Crystal Blue Copper Sulfate is a granular, aquatic-grade algaecide with 99% pure copper sulfate pentahydrate, engineered for effective control of filamentous and string algae in large ponds. Best applied in water temperatures above 60°F, it offers versatile application methods and is safe for most fish species when used responsibly. Ideal for professionals managing expansive water bodies seeking reliable, oxygen-conscious algae treatment.

Specifications

ASIN	B000RUN0T6
Allergen Information	Abalone
Brand Name	Crystal Blue
Customer Reviews	4.4 4.4 out of 5 stars (2,321)
Global Trade Identification Number	00768980003335
Included Components	Copper Sulfate
Item Form	Granules
Item Type Name	Algaecide
Liquid Volume	5 Liters
Manufacturer	Sanco Industries
Manufacturer Part Number	333
Model Number	333
Target Species	Fish
UPC	768980003335
Unit Count	1.0 Count

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699.70 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Tunisia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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4 days ago

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