---
product_id: 433963794
title: "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"
brand: "crystalclear"
price: "€ 93.41"
currency: EUR
in_stock: true
reviews_count: 8
category: "Crystal Clear"
url: https://www.desertcart.ie/products/433963794-algaeoff-pond-and-water-garden-scum-cleaner-waterfall-and-rock
store_origin: IE
region: Ireland
---

# Fast-acting algae killer Plant & pet safe formula EPA registered algaecide 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

**Brand:** crystalclear
**Price:** € 93.41
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** 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 by crystalclear
- **How much does it cost?** € 93.41 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/433963794-algaeoff-pond-and-water-garden-scum-cleaner-waterfall-and-rock)

## 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

- • **Effortless Use:** Simply sprinkle and watch algae vanish—no complicated steps
- • **Odor Eliminator:** Removes foul pond odors while cleaning algae
- • **Eco-Friendly & Safe:** Copper-free formula protects koi, birds, and pets 🌿
- • **Versatile Application:** Perfect for ponds, waterfalls, rocks, and liners 🧪
- • **Instant Algae Annihilation:** Works on contact to clear string algae in seconds ⚡

## Overview

CrystalClear AlgaeOff is an 8 lb EPA-registered granular algaecide designed for rapid removal of string algae and green stains in ponds, waterfalls, and water gardens. Its copper-free, pet-safe formula ensures effective algae control without harming koi, goldfish, birds, or plants. Easy to apply and fast-acting, it also neutralizes foul odors, making it the go-to solution for pristine aquatic environments.

## Description

Buy 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: Water Treatment - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Cleaned up the green stuff - We have a water fountain. I used two scoops allowing 48 hours to pass. Cleaned up the fountain water and sludge on the sides. Very happy.
Review: good enough for my pond - worked well for my pond

## 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 |
|---------------|-------|
| Brand | CrystalClear |
| Customer Reviews | 4.2 out of 5 stars 214 Reviews |
| Item Form | Powder |
| Item Weight | 8 Pounds |
| Manufacturer | Airmax |
| UPC | 810089840219 |

## Product Details

- **Brand:** CrystalClear
- **Item Weight:** 8 Pounds
- **Item Form:** Powder
- **Manufacturer:** Airmax
- **UPC:** 810089840219

## Images

![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 - Image 1](https://m.media-amazon.com/images/I/813GyAI1aKL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Cleaned up the green stuff
*by C***N on November 24, 2025*

We have a water fountain. I used two scoops allowing 48 hours to pass. Cleaned up the fountain water and sludge on the sides. Very happy.

### ⭐⭐⭐⭐⭐ good enough for my pond
*by C***R on October 30, 2025*

worked well for my pond

### ⭐⭐⭐⭐⭐ This actually works!!!
*by J***E on January 21, 2026*

GREAT product! Does the job!!

## 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
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**Shop now:** [https://www.desertcart.ie/products/433963794-algaeoff-pond-and-water-garden-scum-cleaner-waterfall-and-rock](https://www.desertcart.ie/products/433963794-algaeoff-pond-and-water-garden-scum-cleaner-waterfall-and-rock)

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-03-15*