---
product_id: 356781426
title: "Green Killing Machine - Internal UV Steriliser for Aquariums (3W)"
brand: "aa aquarium"
price: "C$7312"
currency: NIO
in_stock: false
reviews_count: 10
url: https://www.desertcart.ni/products/356781426-green-killing-machine-internal-uv-steriliser-for-aquariums-3w
store_origin: NI
region: Nicaragua
---

# 3W UV Power 200L/hr Flow Rate Tool-Free Setup Green Killing Machine - Internal UV Steriliser for Aquariums (3W)

**Brand:** aa aquarium
**Price:** C$7312
**Availability:** ❌ Out of Stock

## Summary

> 💧 Clear water, zero stress—your aquarium’s new best friend!

## Quick Answers

- **What is this?** Green Killing Machine - Internal UV Steriliser for Aquariums (3W) by aa aquarium
- **How much does it cost?** C$7312 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.ni](https://www.desertcart.ni/products/356781426-green-killing-machine-internal-uv-steriliser-for-aquariums-3w)

## Best For

- aa aquarium enthusiasts

## Why This Product

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

## Key Features

- • **Optimized Water Flow:** 200L/hr pump ensures maximum UV exposure for superior sterilization.
- • **Compact & Submersible:** Sleek internal design fits aquariums up to 20 gallons seamlessly.
- • **Effortless Installation:** No tools needed—attach with suction cups and go.
- • **Low Maintenance, High Impact:** Sealed UV bulb and pump combo reduces water changes and hassle.
- • **Crystal Clear Aquariums, Fast:** Powerful 3W UV lamp eliminates green water in days, not weeks.

## Overview

The Green Killing Machine GKM3W is a compact internal UV sterilizer designed for aquariums up to 20 gallons (80L). Featuring a powerful 3W sealed UV bulb and a 200L/hr water pump, it efficiently clears green water by exposing it directly to UV light. Installation is tool-free with included suction cups, making it easy to maintain crystal-clear water and reduce frequent water changes. Ideal for indoor use, this device comes with a UK plug and is backed by positive user reviews praising its fast and effective performance.

## Description

Product Description GKM3W mini Internal UV with Power Head. Keep Your Aquarium Crystal Clear. Reduce water changes. Installation without any tools. Perfect for aquariums for up to 20Ga. Spare bulb and replacement sponge available. Lamp contains Mercury. Manage in Accordance with State Disposal Laws. Directions Indoor use only. Please refer to the instruction booklet inside package for proper usage instructions.

Review: Brilliant piece of kit for clearing green water. - Always a bit sceptical of these claims that products can work miraculously. On this occassion the product did exactly what it said it would. My 40 gallon aquarium had turned to green pea soup. I took the plunge and purchased this item. They reckoned that it would be crystal clear within 4 days. Guess what ......... it worked. My tank is now crystal clear and it was that way on day 4. I would highly reccomend this product. So far the water has stayed clear and we are now over a week into the filter being installed. Simple to do and simple to maintain.
Review: Green killing machine - Does what it says it does but didn’t realize the bulb only lasts 6 to 9 months then it’s around £38 to replace bit steep that wished I’d done my research first

## Features

- GKM3W mini Internal UV with Power Head. For aquariums up to 20 gallons (80L)
- The GKM3W allows water flow in direct contact with the UV lamp, making it extremely efficient. Keep your aquarium crystal clear & reduce water changes.
- No tools required. Simply attached to the inside of the aquarium with the included suction cups. Submersible design for the sealed UV Bulb and pump.
- Pump Flow Rate: 200L/hr. Included components: Water pump, Sealed UV bulb. Comes with UK plug, only suitable to use in the UK.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0957RMC33 |
| Allergen Information | Allergen-Free |
| Batteries Included | No |
| Batteries required | No |
| Best Sellers Rank | 111,496 in Pet Supplies ( See Top 100 in Pet Supplies ) 533 in Aquarium Filters |
| Colour | BLACK |
| Customer Reviews | 4.2 4.2 out of 5 stars (356) |
| Date First Available | 18 May 2021 |
| EU Energy Efficiency Label | C |
| Item Form | Device |
| Item Weight | 531 g |
| Item model number | AAUV3W-B |
| Pet Life Stage | Adult |
| Product Dimensions | 19 x 5.89 x 19.05 cm; 531 g |
| Quantity | 1 |
| Size | 3W |
| Special features | Sealed UV bulb design |
| Specific Uses | Indoor |
| Specification Met | epa |

## Product Details

- **Brand:** AA Aquarium
- **Item form:** Device
- **Item weight:** 531 g
- **Liquid volume:** 80 Litres
- **Manufacturer:** AA Aquarium

## Images

![Green Killing Machine - Internal UV Steriliser for Aquariums (3W) - Image 1](https://m.media-amazon.com/images/I/71HWwt2+AdS.jpg)
![Green Killing Machine - Internal UV Steriliser for Aquariums (3W) - Image 2](https://m.media-amazon.com/images/I/71HtuW12YtL.jpg)
![Green Killing Machine - Internal UV Steriliser for Aquariums (3W) - Image 3](https://m.media-amazon.com/images/I/71feedGC4ZL.jpg)
![Green Killing Machine - Internal UV Steriliser for Aquariums (3W) - Image 4](https://m.media-amazon.com/images/I/81VKyMwSLES.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Brilliant piece of kit for clearing green water.
*by T***7 on 3 January 2026*

Always a bit sceptical of these claims that products can work miraculously. On this occassion the product did exactly what it said it would. My 40 gallon aquarium had turned to green pea soup. I took the plunge and purchased this item. They reckoned that it would be crystal clear within 4 days. Guess what ......... it worked. My tank is now crystal clear and it was that way on day 4. I would highly reccomend this product. So far the water has stayed clear and we are now over a week into the filter being installed. Simple to do and simple to maintain.

### ⭐⭐⭐⭐⭐ Green killing machine
*by J***T on 16 December 2024*

Does what it says it does but didn’t realize the bulb only lasts 6 to 9 months then it’s around £38 to replace bit steep that wished I’d done my research first

### ⭐⭐⭐ Bulb life of approx 6 months
*by A***N on 22 May 2025*

Was great fantastic at keeping the aquarium green free Tube only lasted 6 months and only on at weekends Check price of replacement bulb might sway your decision

## Frequently Bought Together

- AA GKM3W Mini Internal UV,Black,AAUV3W-B
- AA GKM9W Internal UV for Aquariums up to 50Ga,Black
- Seachem Indoor Purigen Organic Filtration Resin - Fresh and Saltwater 100 ml

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*Product available on Desertcart Nicaragua*
*Store origin: NI*
*Last updated: 2026-03-14*