---
product_id: 19409425
title: "Crystal Blue Copper Sulfate Algaecide - Granular Aquatic Grade Copper Sulfate for Pond Algae Control - 5 Pounds"
brand: "crystal blue"
price: "376.27 DT"
currency: TND
in_stock: true
category: "Crystal Blue"
url: https://www.desertcart.tn/products/19409425-crystal-blue-copper-sulfate-algaecide-granular-aquatic-grade-copper-sulfate
store_origin: TN
region: Tunisia
---

# Ideal for large bodies of water Effective above 60°F on active algae 99% pure Copper Sulfate Pentahydrate Crystal Blue Copper Sulfate Algaecide - Granular Aquatic Grade Copper Sulfate for Pond Algae Control - 5 Pounds

**Brand:** crystal blue
**Price:** 376.27 DT
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** Crystal Blue Copper Sulfate Algaecide - Granular Aquatic Grade Copper Sulfate for Pond Algae Control - 5 Pounds by crystal blue
- **How much does it cost?** 376.27 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/19409425-crystal-blue-copper-sulfate-algaecide-granular-aquatic-grade-copper-sulfate)

## Best For

- crystal blue enthusiasts

## Why This Product

- Trusted crystal blue brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Aquatic Grade Purity:** 99% pure granular formula ensures maximum efficacy.
- • **Powerful Algae Control:** Targets filamentous, string algae & swimmers itch with precision.
- • **Easy Granular Dispersion:** Granular form allows targeted treatment on thick floating algae mats for rapid results.
- • **Optimized for Large Ponds:** Designed specifically for expansive water bodies, not small decorative ponds.
- • **Safe Application Guidelines:** Use carefully to protect fish oxygen levels and avoid sensitive species like Koi and Goldfish.

## Overview

Crystal Blue Copper Sulfate Algaecide is a 5-pound granular, aquatic-grade treatment with 99% pure Copper Sulfate Pentahydrate. Engineered for large ponds, it effectively controls various algae types when water temperatures exceed 60°F. Its precise application minimizes harm to fish by avoiding oxygen depletion, making it a trusted solution for professional pond management.

## Description

desertcart.com : Crystal Blue Copper Sulfate Algaecide - Granular Aquatic Grade Copper Sulfate for Pond Algae Control - 5 Pounds : Pond Water Treatments : Patio, Lawn & Garden

## Features

- 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.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000RUN0T6 |
| Allergen Information | Abalone |
| Best Sellers Rank | #4,002 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #21 in Water Garden & Pond Treatment |
| Brand Name | Crystal Blue |
| Customer Reviews | 4.4 4.4 out of 5 stars (2,430) |
| 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 |
| Warranty Description | See label |

## Product Details

- **Brand:** Crystal Blue
- **Item Form:** Granules
- **Liquid Volume:** 5 Liters
- **Manufacturer:** Sanco Industries
- **Unit Count:** 1.0 Count

## Images

![Crystal Blue Copper Sulfate Algaecide - Granular Aquatic Grade Copper Sulfate for Pond Algae Control - 5 Pounds - Image 1](https://m.media-amazon.com/images/I/81cWa2gCfkL.jpg)

## Questions & Answers

**Q: Is copper safe to use with fish?**
A: 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.

**Q: How often should I use Copper Sulfate?**
A: 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.

**Q: How do I apply this product?**
A: Apply by casting granulars, dragging behind boat in burlap, or dissolve and spray.

**Q: How much product do I use?**
A: 1.8 lbs of copper will treat up to 15,000 square feet.

**Q: When is the best time to treat my pond algae?**
A: Pond algae should be treated when algae is actively growing and water temperatures are above 60F.

## Frequently Bought Together

- Crystal Blue Copper Sulfate Algaecide - Granular Aquatic Grade Copper Sulfate for Pond Algae Control - 5 Pounds
- Blue Lake and Pond Dye - One Gallon of Professional Lake & Pond Dye - Treats Up to 1 Acre - Royal Blue Color - Safe for Fish, Wildlife, Pets & Children
- Crystal Blue Natural Pond Cleaner - Muck and Sludge Remover, Safe for Koi - 1 Gallon

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**Shop now:** [https://www.desertcart.tn/products/19409425-crystal-blue-copper-sulfate-algaecide-granular-aquatic-grade-copper-sulfate](https://www.desertcart.tn/products/19409425-crystal-blue-copper-sulfate-algaecide-granular-aquatic-grade-copper-sulfate)

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-07-30*