---
product_id: 494910918
title: "1 * 18W PLL 2G11 4-Pin Replacement UV Bulb Lamp for Pond Filter UVC & Clarifiers"
brand: "affybulb"
price: "€ 38.15"
currency: EUR
in_stock: true
reviews_count: 13
category: "Affy Bulb"
url: https://www.desertcart.com.cy/products/494910918-1-18w-pll-2g11-4-pin-replacement-uv-bulb-lamp
store_origin: CY
region: Cyprus
---

# Wide 220-240V Voltage Stability 18W Power Efficiency 96% UVC Transmission 1 * 18W PLL 2G11 4-Pin Replacement UV Bulb Lamp for Pond Filter UVC & Clarifiers

**Brand:** affybulb
**Price:** € 38.15
**Availability:** ✅ In Stock

## Summary

> 💧 Illuminate your pond’s purity with cutting-edge UVC power!

## Quick Answers

- **What is this?** 1 * 18W PLL 2G11 4-Pin Replacement UV Bulb Lamp for Pond Filter UVC & Clarifiers by affybulb
- **How much does it cost?** € 38.15 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/494910918-1-18w-pll-2g11-4-pin-replacement-uv-bulb-lamp)

## Best For

- affybulb enthusiasts

## Why This Product

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

## Key Features

- • **Instant Flicker-Free Start:** Exclusive 2G11 4-pin design for electronic ballasts ensures reliable, smooth operation.
- • **Precision 253.7nm UVC Output:** Narrowband wavelength delivers 20% higher germicidal energy without harmful ozone.
- • **Certified Safety & Durability:** CE, RoHS, UKCA & FCC certified for eco-friendly, long-lasting water sterilization.
- • **Engineered for European Grids:** Stable performance with 220-240V compatibility, even under voltage fluctuations.
- • **Crystal Clear Pond Water, Guaranteed:** Eliminates 99.9% algae & bacteria for pristine aquatic environments.

## Overview

This 18W 2G11 4-pin UVC replacement bulb from AffyBulb features premium quartz glass for 96% UVC transmission, emitting a precise 253.7nm wavelength that safely eliminates 99.9% of harmful microorganisms in ponds and aquariums. Designed for European 220-240V grids with electronic ballast compatibility, it ensures flicker-free, stable sterilization while meeting all major safety certifications for reliable, eco-conscious water purification.

## Description

【About Us】AffyBulb is a quality manufacturer specialising in the development of pest control equipment. We are committed to providing our customers with safe and reliable products and excellent after-sales service.【Specifications】One UVC 18W 2G11 PLL replacement lamp, length 222mm, excluding thimble 215mm, diameter 12mm, lamp holder model: 2G11-4pins【Tips for use】1. Before purchasing a lamp, please ensure that you are using the same lamp specification as our product.2. In order to achieve the best results from our products, we recommend replacing the bulb with a new one every 6-8 months.3. Due to the sensitivity of the UVC light source to human DNA, direct exposure to people, animals and plants or looking directly at the light source while using the product is prohibited.【About after-sales service】If you encounter a broken bulb or a bulb that does not light up, please contact us via desertcart station letter and our customer service will do the return/refund for you.【About Invoice】Whether you are a corporate customer or an individual customer, you will be provided with a purchase invoice for all AffyBulb brand products.After payment, the desertcart system will automatically generate a purchase invoice for you, please download it from the order details.

Review: Reliable, clear pond water. - High quality uv bulb for my pond filter set up, came nicely boxed and has been running now for 24 hours a day 7 days a week for months, pond is crystal clear, it has proved it's reliability.
Review: Bright gas when on - Doesn’t work as a bug zapper bulb but that is my fault not the supplier

## Features

- 【High-Purity Quartz Glass for 96% UVC Transmission】 Crafted from premium quartz glass, this 18W UVC bulb delivers up to 96% UVC transmittance, ensuring maximum germicidal efficiency. Ideal for water purification, it eliminates up to 99.9% of algae, bacteria, and microorganisms in ponds, aquariums, and water treatment systems.
- 【Precise 253.7nm Narrowband Output – No Ozone】 Emits a peak wavelength of 253.7nm with a narrower waveform than standard bulbs, delivering nearly 20% higher energy density for more effective DNA disruption. This specific wavelength does not produce harmful ozone, making it safer for fish and aquatic life while maintaining powerful sterilisation.
- 【Optimised for European 230V Grid & Voltage Fluctuations】 Designed specifically for the UK and European electrical systems, this bulb features a 220–240V wide-voltage starter. Compared to standard 220V-only bulbs, it maintains stable UVC output and longer lifespan even under grid voltage fluctuations, ensuring reliable performance.
- 【Electronic Ballast Only – Critical Compatibility】 This 2G11 4-pin PLL lamp (225mm length) is engineered exclusively for electronic ballasts. It delivers flicker-free instant start and consistent output. ⚠️ Not compatible with magnetic (inductive) ballasts – please verify your fixture type before ordering to prevent damage.
- 【Certified Safety & Reliable Construction】 Fully compliant with CE, RoHS, UKCA, and FCC certifications, ensuring safe operation and environmental responsibility. Built with durable components to withstand continuous use, making it a dependable replacement for your water steriliser, pond clarifier, or UV filtration system.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B7VYG3L6 |
| Accepted Voltage Frequency | 220 to 240 Volts and 50 Hertz |
| Average Life Span | 7 Months |
| Best Sellers Rank | 19,251 in Garden ( See Top 100 in Garden ) 10 in Water Garden & Pond Ultraviolet Sterilisers |
| Brand | AffyBulb |
| Brand Name | AffyBulb |
| Bulb Base | G13 |
| Bulb Shape Size | T8 |
| Bulb base | G13 |
| Bulb shape size | T8 |
| Colour | White |
| Connectivity Technology | Infrared, NO, USB |
| Control Method | Touch |
| Controller Type | Push Button |
| Country Of Origin | China |
| Customer Reviews | 4.2 out of 5 stars 137 Reviews |
| Incandescent Equivalent | 30 Watts |
| Indoor Outdoor Usage | Indoor |
| Item Dimensions W x H | 12W x 12H millimetres |
| Item Shape | Arbitrary(A) |
| Light Color | White |
| Light Output Maximum | 450 Lumens |
| Light Source Wattage | 18 Watts |
| Light Type | Fluorescent |
| Light type | Fluorescent |
| Manufacturer | AffyBulb |
| Manufacturer Part Number | 18W 2G11-4pins |
| Material Type | Glass |
| Model Name | 2G11 PLL |
| Model Number | ZW18D17W-H217 |
| Number of Items | 1 |
| Package Quantity | 1 |
| Power Consumption | 18 Watts |
| Power Source | Electric |
| Special Features | Energy Efficient |
| Special feature | Energy Efficient |
| Specific Uses | Aquarium |
| Theme | disinfection and purification |
| Type of Bulb | Ultraviolet |
| Unit Count | 1.0 count |
| Voltage | 230 Volts |
| Wattage | 18 watts |
| White Brightness | 450 Lumens |

## Product Details

- **Brand:** AffyBulb
- **Bulb shape size:** T8
- **Light type:** Fluorescent
- **Special feature:** Energy Efficient
- **Wattage:** 18 watts

## Images

![1 * 18W PLL 2G11 4-Pin Replacement UV Bulb Lamp for Pond Filter UVC & Clarifiers - Image 1](https://m.media-amazon.com/images/I/61gSfKc08CL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Reliable, clear pond water.
*by M***H on 11 November 2025*

High quality uv bulb for my pond filter set up, came nicely boxed and has been running now for 24 hours a day 7 days a week for months, pond is crystal clear, it has proved it's reliability.

### ⭐⭐⭐⭐⭐ Bright gas when on
*by A***E on 15 April 2025*

Doesn’t work as a bug zapper bulb but that is my fault not the supplier

### ⭐⭐⭐⭐⭐ Does the job
*by M***S on 15 June 2024*

Annual changes are a must to keep pond healthy. Buy a pair saves a little and you always have one if needed.

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*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-10-25*