---
product_id: 16221136
title: "Crystal Plex - Lake and Pond Algaecide Treatment - Liquid Copper Algaecide Kills and Prevents Various Types of Algae (Planktonic, Filamentous, Chara) - 1 Gallon Treats up to 1 Acre"
brand: "crystal blue"
price: "553.70 DT"
currency: TND
in_stock: true
category: "Crystal Blue"
url: https://www.desertcart.tn/products/16221136-crystal-plex-lake-and-pond-algaecide-treatment-liquid-copper-algaecide
store_origin: TN
region: Tunisia
---

# 1 gallon treats 1 surface acre Kills planktonic, filamentous & chara algae 100% safe for humans, fish & pets Crystal Plex - Lake and Pond Algaecide Treatment - Liquid Copper Algaecide Kills and Prevents Various Types of Algae (Planktonic, Filamentous, Chara) - 1 Gallon Treats up to 1 Acre

**Brand:** crystal blue
**Price:** 553.70 DT
**Availability:** ✅ In Stock

## Summary

> 💧 Clear waters, zero worries — your pond’s new best friend!

## Quick Answers

- **What is this?** Crystal Plex - Lake and Pond Algaecide Treatment - Liquid Copper Algaecide Kills and Prevents Various Types of Algae (Planktonic, Filamentous, Chara) - 1 Gallon Treats up to 1 Acre by crystal blue
- **How much does it cost?** 553.70 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/16221136-crystal-plex-lake-and-pond-algaecide-treatment-liquid-copper-algaecide)

## 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

- • **Generous Coverage:** One gallon treats up to 1 surface acre of water up to 3 feet deep—perfect for large ponds and lakes.
- • **Targeted Application:** Treat only a third to half of your pond at a time for optimal results and environmental balance.
- • **Broad-Spectrum Safety:** Formulated to be 100% safe for humans, fish, livestock, pets, birds, swimming, and irrigation when used as directed.
- • **Season-Long Protection:** Prevents algae regrowth, ensuring your pond stays pristine all year round.
- • **Comprehensive Algae Control:** Effectively eliminates planktonic, filamentous, and chara algae for crystal-clear water.

## Overview

Crystal Plex is a powerful liquid copper algaecide designed to kill and prevent multiple types of algae including planktonic, filamentous, and chara. Safe for humans, pets, and most aquatic life (excluding koi, goldfish, and trout), this 1-gallon treatment covers up to 1 surface acre of water up to 3 feet deep, delivering season-long algae control for beautiful, healthy ponds and lakes.

## Description

desertcart.com : Crystal Plex - Lake and Pond Algaecide Treatment - Liquid Copper Algaecide Kills and Prevents Various Types of Algae (Planktonic, Filamentous, Chara) - 1 Gallon Treats up to 1 Acre : Algaecide Water Treatments : Patio, Lawn & Garden

## Features

- Controls many types of algae such as filamentous, chara, planktonic and swimmers itch for a beautiful and safe pond all year long
- When used as directed, Crystal Plex is 100 percent safe for humans, fish, livestock, pets, birds, swimming and irrigation
- Not for use in Koi, Goldfish, or Trout ponds
- Treat only a third to half of your pond at a time
- One gallon treats 1 surface acre 1-3 ft deep

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000IOBRBY |
| Best Sellers Rank | #7,381 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #32 in Water Garden & Pond Treatment |
| Brand | Crystal Blue |
| Brand Name | Crystal Blue |
| Customer Reviews | 4.0 out of 5 stars 924 Reviews |
| Global Trade Identification Number | 00768980004448 |
| Included Components | 1 |
| Item Form | Spray |
| Item Type Name | algae control |
| Item Weight | 9 Pounds |
| Liquid Volume | 128 Fluid Ounces |
| Manufacturer | Crystal Blue |
| Manufacturer Part Number | 444 |
| Model Number | 444 |
| Number of Packs | 1 |
| Pet Type | Bird, Fish |
| Target Species | Other Fish |
| UPC | 768980004448 |
| Unit Count | 1.0 Count |
| Warranty Description | No_warranty |

## Product Details

- **Brand:** Crystal Blue
- **Item Form:** Spray
- **Item Weight:** 9 Pounds
- **Liquid Volume:** 128 Fluid Ounces
- **Manufacturer:** Crystal Blue

## Images

![Crystal Plex - Lake and Pond Algaecide Treatment - Liquid Copper Algaecide Kills and Prevents Various Types of Algae (Planktonic, Filamentous, Chara) - 1 Gallon Treats up to 1 Acre - Image 1](https://m.media-amazon.com/images/I/718k4O+LBeL.jpg)

## Questions & Answers

**Q: Is Crystal Plex 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, Crystal Plex is not meant for small deco ponds and is toxic to Koi, Goldfish and Trout.

**Q: How often should I use Crystal Plex?**
A: Crystal Plex 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 mixing and spraying algae.

**Q: How much product do I use?**
A: 13 oz. of Crystal Plex mixed with a couple gallons of water will treat 1,000 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 Plex - Lake and Pond Algaecide Treatment - Liquid Copper Algaecide Kills and Prevents Various Types of Algae (Planktonic, Filamentous, Chara) - 1 Gallon Treats up to 1 Acre
- Crystal Blue Natural Pond Cleaner - Muck and Sludge Remover, Safe for Koi - 1 Gallon
- Crystal Blue Lake and Pond Dye - 1 Gallon - Royal Blue Color Treats up to 1 Acre - Clean, Clear & Crystal Blue Water - Environmentally Friendly Pond Dye

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**Shop now:** [https://www.desertcart.tn/products/16221136-crystal-plex-lake-and-pond-algaecide-treatment-liquid-copper-algaecide](https://www.desertcart.tn/products/16221136-crystal-plex-lake-and-pond-algaecide-treatment-liquid-copper-algaecide)

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-09-06*