---
product_id: 34808292
title: "CBG-800 5W UV Sterilizer Hang-On Back Filter, 20-50 gallon/211 GPH, Black"
brand: "grech"
price: "$217.10"
currency: USD
in_stock: true
url: https://www.desertcart.ec/products/34808292-cbg-800-5w-uv-sterilizer-hang-on-back-filter-20
store_origin: EC
region: Ecuador
---

# 211 GPH Flow Rate 9x5x7 in Dimensions 5W UV Sterilizer CBG-800 5W UV Sterilizer Hang-On Back Filter, 20-50 gallon/211 GPH, Black

**Brand:** grech
**Price:** $217.10
**Availability:** ✅ In Stock

## Summary

> 🌊 Dive into Clarity with the Ultimate Aquarium Filter!

## Quick Answers

- **What is this?** CBG-800 5W UV Sterilizer Hang-On Back Filter, 20-50 gallon/211 GPH, Black by grech
- **How much does it cost?** $217.10 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/34808292-cbg-800-5w-uv-sterilizer-hang-on-back-filter-20)

## Best For

- grech enthusiasts

## Why This Product

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

## Key Features

- • **Crystal Clear Waters:** Experience pristine aquarium clarity with advanced UV sterilization.
- • **Efficient Filtration:** Dual biological and mechanical filtration for optimal water quality.
- • **User-Friendly Design:** Easy setup with a simple push to start the impeller.
- • **Versatile Compatibility:** Perfectly suited for 20-50 gallon tanks, making it a versatile choice.
- • **Surface Skimmer Included:** Eliminate unsightly surface films for a cleaner aquarium look.

## Overview

The GRECHCBG-800 5W UV Sterilizer Hang-On Back Filter is designed for aquarium enthusiasts, providing a powerful 211 GPH flow rate and a 5W UV sterilizer to keep your tank crystal clear. Suitable for 20 to 50-gallon tanks, it features dual filtration and a surface skimmer, ensuring optimal water quality and aesthetic appeal.

## Description

Grech CBG-800 5W UV Sterilizer Hang-On Back Filter, 20-50 gallon/211 GPH, Black

## Features

- Adjustable 211gph Filter Flow Rate with Surface Skimmer to eliminate undesired surface films
- Features a 5W UV Sterilizer. Helps eliminate algae and bacteria, keeping aquarium water crystal clear
- Suitable Aquarium Tank Size: 20 to 50 Gallons
- Dimension: 9 x 5 x 7in (229 x 127.5 x 179mm)
- Biological and mechanical filtration. Box includes active carbon and bio media
- Note: Give the impeller “flywheel” a little push to start as magnet sometime stuck to certain position when sitting in the box for a long period of time.

## Images

![CBG-800 5W UV Sterilizer Hang-On Back Filter, 20-50 gallon/211 GPH, Black - Image 1](https://m.media-amazon.com/images/I/612Xq+O6KoL.jpg)

## Questions & Answers

**Q: Will 2 of these would work for a 75 gallon tank. The reviews so far look good on this item.**
A: I use one in a 55 gal. tank, so two should be plenty for a 75 gal.

**Q: Can this replace a protein skimmer as well? right now i have a hang on filter & hang on skimmer, as well as a uv. i'm looking to combine them**
A: It does have a surface skimmer built in the only issue can be fish fry. You can always put a sponge over it, but most of the time I see my fry stay away from it. Depends on the size of your tank. I would say this filter is good up to 40 gallons by itself.

**Q: The impeller is working, so why is my filter only shooting out a small amout of water every 30 seconds?**
A: Take the filter out and pull open the power block, pull the impeller, make sure there's no gunk in there and make sure the impeller is inserted all the way.  Had this happen with one of mine - this fixed it.

**Q: Having issues with it fitting a 60 gallon it won’t fit over the lip. I don’t want to force it to break the plastic. Has anyone else had this issue?**
A: I had the same problem. I ended up needing to use a small hacksaw and cut a groove in the plastic border of my tank. Hope you do better with your filter than I've done with mine. FWIW, I don't think this filter will handle a 60 gallon tank. I have a rough time with mine just handling a less than 40 gallon tank.

## Frequently Bought Together

- Grech CBG-800 5W UV Sterilizer Hang-On Back Filter, 20-50 gallon/211 GPH, Black
- AquaClear 50 Foam Filter Inserts, Aquarium Filter Replacement Media, 3 Count (Pack of 1), A1394
- Aqua Clear AquaClear Activated Carbon Filter Inserts, 3 Pack – Replacement Chemical Filter Media for 50 Gallon Tank

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*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-03-09*