---
product_id: 433963794
title: "CrystalClear AlgaeOff String Algae Killer for Pond & Water Garden, 8 lbs | Scum Cleaner Waterfall & Rock Slime Remover Green Stain Treatment EPA Registered Algaecide Plant, Koi Fish, Bird & Pet Safe"
brand: "crystalclear"
price: "€ 191.98"
currency: EUR
in_stock: true
reviews_count: 8
category: "Crystal Clear"
url: https://www.desertcart.es/products/433963794-crystalclear-algaeoff-string-algae-killer-for-pond-and-water-garden
store_origin: ES
region: Spain
---

# Fast-acting formula Copper-free, wildlife safe Granular easy application CrystalClear AlgaeOff String Algae Killer for Pond & Water Garden, 8 lbs | Scum Cleaner Waterfall & Rock Slime Remover Green Stain Treatment EPA Registered Algaecide Plant, Koi Fish, Bird & Pet Safe

**Brand:** crystalclear
**Price:** € 191.98
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** CrystalClear AlgaeOff String Algae Killer for Pond & Water Garden, 8 lbs | Scum Cleaner Waterfall & Rock Slime Remover Green Stain Treatment EPA Registered Algaecide Plant, Koi Fish, Bird & Pet Safe by crystalclear
- **How much does it cost?** € 191.98 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/433963794-crystalclear-algaeoff-string-algae-killer-for-pond-and-water-garden)

## Best For

- crystalclear enthusiasts

## Why This Product

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

## Key Features

- • **Versatile Use:** Perfect for ponds, waterfalls, rocks, and liners—ideal for large water gardens
- • **Eco-Friendly Formula:** Copper-free and safe for koi, goldfish, and aquatic wildlife 🌿
- • **Instant Algae Control:** Works on contact to eliminate string algae in seconds ⚡
- • **Effortless Application:** Simply sprinkle granular powder directly on algae-covered surfaces 🧂
- • **Odor & Scum Eliminator:** Not only kills algae but also removes foul odors for a pristine water environment

## Overview

CrystalClear AlgaeOff is an EPA-registered, fast-acting granular algaecide designed to quickly remove string algae from ponds, waterfalls, and water gardens. Its copper-free formula ensures safety for fish and aquatic wildlife when used as directed, making it a reliable choice for maintaining crystal-clear water and a healthy ecosystem.

## Description

Buy CrystalClear AlgaeOff String Algae Killer for Pond & Water Garden, 8 lbs | Scum Cleaner Waterfall & Rock Slime Remover Green Stain Treatment EPA Registered Algaecide Plant, Koi Fish, Bird & Pet Safe: Water Treatment - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Works fast - This Item was packaged properly, shipped promptly and was as described. Functionality was better than expected
Review: Toxic to birds - listing description is inaccurate! - The desertcart listing says this product is safe for birds, fish and pets, but the label clearly says "this product is toxic to birds." I would absolutely not have purchased this if I had thought it was toxic to the wid birds who drink out of my pond. Also toxic to bees. Very, very disappointed. Returning.

## Features

- Controls Algae in Ponds -- AlgaeOff algae remover works on contact! Utilizing the latest in oxygen technology to remove and kill string algae quickly and efficiently on rocks, streams, and waterfalls.
- EPA Registered Algaecide -- AlgaeOff is a fast-acting EPA registered granular algae remover that works in seconds! In addition to string algae control, it removes foul odors.
- Fast Acting, Works on Contact, Easy Application -- Simply sprinkle granular formula directly on areas covered in live algae. For a waterfall or fountain, turn off the water pump and apply treatment.
- Kills Algae Fast -- Immediately removes & lifts string algae. A great solution for pond clean-outs, rocks, and liners. Use in large ponds and lakes with algae mats. Will not treat planktonic algae or Chara.
- Will Not Harm Wildlife -- Does not contain copper! When used as directed, AlgaeOff is great for backyard ponds containing koi, goldfish, and grass carp. Will not harm animals when diluted in water.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09RKHVDY4 |
| Best Sellers Rank | #11,063 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #38 in Water Garden & Pond Treatment |
| Brand | CrystalClear |
| Brand Name | CrystalClear |
| Customer Reviews | 3.7 out of 5 stars 320 Reviews |
| Included Components | Scoop |
| Item Form | Powder |
| Item Weight | 8 pounds |
| Manufacturer | Airmax |
| Manufacturer Part Number | CC074-08 |
| Pet Type | Fish |
| Target Species | Fish |
| UPC | 810089840219 |
| Unit Count | 1 Count |

## Product Details

- **Brand:** CrystalClear
- **Item Form:** Powder
- **Item Weight:** 8 Pounds
- **Manufacturer:** Airmax
- **Unit Count:** 1.0 Count

## Images

![CrystalClear AlgaeOff String Algae Killer for Pond & Water Garden, 8 lbs | Scum Cleaner Waterfall & Rock Slime Remover Green Stain Treatment EPA Registered Algaecide Plant, Koi Fish, Bird & Pet Safe - Image 1](https://m.media-amazon.com/images/I/813GyAI1aKL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works fast
*by V***R on August 16, 2026*

This Item was packaged properly, shipped promptly and was as described. Functionality was better than expected

### ⭐ Toxic to birds - listing description is inaccurate!
*by L***D on July 19, 2026*

The Amazon listing says this product is safe for birds, fish and pets, but the label clearly says "this product is toxic to birds." I would absolutely not have purchased this if I had thought it was toxic to the wid birds who drink out of my pond. Also toxic to bees. Very, very disappointed. Returning.

### ⭐⭐⭐⭐⭐ It's a magical algae remover
*by T***. on March 21, 2025*

I'm not saying it's magic but it is absolutely something! I've used it two times within this week both times after just a few minutes algae starts coming to the top for you to scoop it out. I've kept my pumps running and after I scooped out what I can scoop out it usually settles on top of the lid and I'm able to clean it all out. Water looks disgusting while it's going on but once the pumps run for a while it goes back to Crystal Clear and none of my fish or frogs have died. Definitely recommend if you have algae growth it's obviously doing something to it.

## Frequently Bought Together

- CrystalClear AlgaeOff Pond & Water Garden Scum Cleaner, Waterfall & Rock Slime Remover, String Algae Killer, Green Stain Treatment, EPA Registered Algaecide, Plant, Koi Fish, Bird & Pet Safe, 8 lbs
- CrystalClear MuckOff, Natural Pond Muck Treatment, Water Garden, Fountain & Bird Bath Sludge Remover, Living Beneficial Bacteria Clarifier with Enzyme, Fish, Aquatic Animal, & Pet Safe, 96 Tablets
- API POND ALGAEFIX Algae Control 32-Ounce Bottle, FISHAQUARI (169G)

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*Product available on Desertcart Spain*
*Store origin: ES*
*Last updated: 2026-08-25*