---
product_id: 7155620
title: "HW-304B Pro"
brand: "sunsun"
price: "$1365924"
currency: COP
in_stock: null
reviews_count: 8
category: "Sun Sun"
url: https://www.desertcart.co/products/7155620-hw-304b-pro
store_origin: CO
region: Colombia
---

# 525 GPH flow rate 9W built-in UV sterilizer 5-stage filtration system HW-304B Pro

**Brand:** sunsun
**Price:** $1365924
**Availability:** ❌ Out of Stock

## Summary

> 💦 Elevate your aquarium game with pro-level clarity and flow!

## Quick Answers

- **What is this?** HW-304B Pro by sunsun
- **How much does it cost?** $1365924 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.co](https://www.desertcart.co/products/7155620-hw-304b-pro)

## Best For

- sunsun enthusiasts

## Why This Product

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

## Key Features

- • **Powerful 525 GPH Flow:** Keeps up to 150-gallon tanks crystal clear with rapid water turnover
- • **Generous Media Capacity:** Includes 4 large media baskets with premium carbon, ceramic rings & bio balls for superior filtration
- • **Built-in 9W UV Sterilizer:** Eliminates harmful pathogens and algae for healthier fish & reptiles
- • **Advanced 5-Stage Filtration:** Mechanical, chemical & biological filtration for pristine aquatic environments
- • **User-Friendly Self-Priming Pump:** No manual siphoning needed—easy setup and maintenance for busy pros

## Overview

The SunSun HW-304B Pro is a robust external canister filter designed for freshwater and saltwater aquariums up to 150 gallons. Featuring a powerful 525 GPH flow rate and a 5-stage filtration system with included premium media, it ensures superior mechanical, chemical, and biological water purification. Its built-in 9W UV sterilizer combats algae and pathogens, while the self-priming pump simplifies setup and maintenance. Ideal for professionals and enthusiasts seeking reliable, high-performance filtration at an unbeatable value.

## Description

The SunSun HW-304B external 5-stage canister filter with built in UV sterilizer is ideal for tanks up to 150 gallon freshwater or saltwater aquarium. It is capable of handling up to 525 gallons per hour with 4 flexible media trays that allow you to add your media such as SunSun's activated carbons, ceramic rings or bio-balls (included) to achieve excellent mechanical, chemical and biological filtration. The HW-304B canister filter has a convenient self-priming pump that eliminates the need for manual siphoning.

Review: AMAZING FILTER FOR A TURTLE!! - Soooo I’ve been wanting a better filter for my baby RES turtle “Mott” for his 20G long aquarium. Used the HOB filters but they always ended up leaking water all over my floor and I was DONE. So I started looking into canister filters with UV. Found this and ordered it. Less than $100? WHY NOT? When the package arrived a few days later I was BLOWN AWAY at how large the box was. Then I took it out of the box and was BLOWN AWAY at the fact that the filter is just as big as the box. I was expecting something like 1/4 the size so I was shocked. It’s a 20G long so it’s not that deep, it’s “long”. Had to cut the intake pipe so it would fit in the tank. But I’m SOOOO GLAD I bought this filter. 1 month later it keeps my turtles tank SOOOO CLEAN! I LOVE it!! If you’re thinking about it, just get it! I added a $10 wave maker to it to push the dirt to the intake and it’s PERFECT! Not only is Mott happy, but I am too! Such an amazing filter! BIG, but fairly quiet and have 0 complaints as of yet! Will update this if anything changes, but I doubt it will. * the water was cloudy for the first few days but I turned OFF the UV and it cleared up. I think it needed to build up beneficial bacteria to help clear up. Any questions? ASK ME !
Review: Performance and price, just can't beat it! Recommended - I am no expert! Just other guy like fish! I am running this SunSun right next to my Eheim 2075 pro 3 which I got it from a local aquarium about 7 months. Here is what I think of both side by side. By the way. This 304B comes with 4 media baskets not 3 shows on the picture. Price: SunSun is only 1/3 of the cost Material: SunSun use some type of soft plastic all around, all of parts can be blended. Eleim are use hard plastic, which build with better durable materials. Water flow: SunSun has better water flow than Eheim. SunSun rated 575 gph and Eleim rated 330 gph. Noise: The noise level from SunSun is acceptable, but still notable if you wants to hear it. But Eheim has less noise compare to sun sun. Media baskets and medias: SunSun does not comes with any media in the box. However the seller does included some basic media and pads with no extra cost. SunSun baskets are much bigger than Ehiem which mean can hold more media. Place of origin: SunSun / China, Ehiem / German. Easy to use: - SunSun set up is simple and easy. But there is very limit print information walk through how to setup. With experience people that is no problem. But for newbie, youtube is your friend! - Built in On / Off switch for the 9W UV light, also had a small indication is on or off. - The hose is 1 inch size. Ehiem use 3/4. - SunSun media baskets also make from soft plastic. Which Eleim use slimier plastic! However. Eheim has better design form stacking. I do need extra time to be sure I put them in the right way and level. Again these baskets are bigger than the Ehiem 2075 - SunSun basket has no indication when is full. Ehiem and many other use transparency basket so the water level can be very easy to view. So far, I like the SunSun 304B with the performance and price, just can't beat it! Give it 6 months, will see anything change. At the end, don't expect paid for the Hyundai price for a Mercedes. But Mercedes not always better than Hyundai. Update after 7 months The canister is still stay quiet, smooth and have very strong water flow. I have perform complete cleaning 3x since new. No leaking or any problems. Completely bang for the buck from this guy. I am sure I will recommended to my friends! Change from 4 stars to 5 stars 20 months, working perfect as day one! getting other one for my planted tank soon To be honest, this HW308B is out performance Ehiem Pro 3. I have the Sun Sun for over 26 months. Every time i have to clean the Ehiem and wants to replace with the another sun sun. After 2.5 years of use. on last filter cleaning, I found a small piece of black plastic falls out. and I can't find anywhere to put it back. so I design to skip that after cleaning. however, it start to leak. I try different ways to fix it, but leak still happen, it looks like the water is over flow to the limit and start coming out, I think is something to do with that small piece of black plastic which I don't know how to put it back. SO I call it DONE. Just place an order for same one to replace it. for the price it worth to use it again!

## Features

- HW-304B Pro Filtration Kit, Good for up to 150 gallon aquariums
- Flow rate: 525 GPH (2000L/Hr)
- Dimension: 11" L X 11" W X 17" H
- Pro Kit Includes Canister Filter w/9 Watt UV, 4 White Filter Pads, 1 Blue Coarse Pad, 4 Media Baskets
- Includes 1lb of Premium Filter Carbon, 1lb of Ceramic Rings and 1 Set of Bio Balls

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00MH37484 |
| ASIN  | B00MH37484 |
| Age Range Description | All Life Stages |
| Best Sellers Rank | #83,322 in Pet Supplies ( See Top 100 in Pet Supplies ) #418 in Aquarium Filters |
| Brand Name | SunSun |
| Color | White |
| Customer Reviews | 4.1 4.1 out of 5 stars (1,033) |
| Date First Available | August 6, 2014 |
| Date First Available  | August 6, 2014 |
| Directions | SUNSUN HW304B Canister Filter |
| Included Components | Filter, Media kits, accessories |
| Is Discontinued By Manufacturer  | No |
| Item Dimensions LxWxH | 12 x 12 x 18 inches |
| Item Package Dimensions L x W x H | 18.5 x 15.5 x 12.25 inches |
| Item Weight | 17 Pounds |
| Item model number | HW-304BPro |
| Item model number  | HW-304BPro |
| Manufacturer | SunSun |
| Manufacturer  | SunSun |
| Model Name | HW304B PRO |
| Number of Items | 1 |
| Product Dimensions  | 12 x 12 x 18 inches; 17 Pounds |
| Size | HW-304B Pro |
| Specific Uses for Product | Indoor |
| Target Audience Keyword | Fish, Reptiles, fish; insects; reptiles, insects |
| Warranty Description | 180-day |

## Product Details

- **Brand:** SunSun
- **Global Trade Identification Number:** 00704119287832
- **Photo Filter Effect Type:** Ultraviolet
- **Photo Filter Thread Size:** 11 Millimeters
- **Product Dimensions:** 17"L x 11"W
- **UPC:** 680596396505 704119287832
- **Water Resistance Level:** Not Water Resistant

## Images

![HW-304B Pro - Image 1](https://m.media-amazon.com/images/I/41ESmgCgZkL.jpg)
![HW-304B Pro - Image 2](https://m.media-amazon.com/images/I/41P87TUMk3L.jpg)
![HW-304B Pro - Image 3](https://m.media-amazon.com/images/I/41TFdxJcMcL.jpg)
![HW-304B Pro - Image 4](https://m.media-amazon.com/images/I/51OM3VF1g9L.jpg)
![HW-304B Pro - Image 5](https://m.media-amazon.com/images/I/51a6Cpcby5L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ AMAZING FILTER FOR A TURTLE!!
*by M***O on July 12, 2020*

Soooo I’ve been wanting a better filter for my baby RES turtle “Mott” for his 20G long aquarium. Used the HOB filters but they always ended up leaking water all over my floor and I was DONE. So I started looking into canister filters with UV. Found this and ordered it. Less than $100? WHY NOT? When the package arrived a few days later I was BLOWN AWAY at how large the box was. Then I took it out of the box and was BLOWN AWAY at the fact that the filter is just as big as the box. I was expecting something like 1/4 the size so I was shocked. It’s a 20G long so it’s not that deep, it’s “long”. Had to cut the intake pipe so it would fit in the tank. But I’m SOOOO GLAD I bought this filter. 1 month later it keeps my turtles tank SOOOO CLEAN! I LOVE it!! If you’re thinking about it, just get it! I added a $10 wave maker to it to push the dirt to the intake and it’s PERFECT! Not only is Mott happy, but I am too! Such an amazing filter! BIG, but fairly quiet and have 0 complaints as of yet! Will update this if anything changes, but I doubt it will. * the water was cloudy for the first few days but I turned OFF the UV and it cleared up. I think it needed to build up beneficial bacteria to help clear up. Any questions? ASK ME !

### ⭐⭐⭐⭐⭐ Performance and price, just can't beat it! Recommended
*by P***4 on January 9, 2015*

I am no expert! Just other guy like fish! I am running this SunSun right next to my Eheim 2075 pro 3 which I got it from a local aquarium about 7 months. Here is what I think of both side by side. By the way. This 304B comes with 4 media baskets not 3 shows on the picture. Price: SunSun is only 1/3 of the cost Material: SunSun use some type of soft plastic all around, all of parts can be blended. Eleim are use hard plastic, which build with better durable materials. Water flow: SunSun has better water flow than Eheim. SunSun rated 575 gph and Eleim rated 330 gph. Noise: The noise level from SunSun is acceptable, but still notable if you wants to hear it. But Eheim has less noise compare to sun sun. Media baskets and medias: SunSun does not comes with any media in the box. However the seller does included some basic media and pads with no extra cost. SunSun baskets are much bigger than Ehiem which mean can hold more media. Place of origin: SunSun / China, Ehiem / German. Easy to use: - SunSun set up is simple and easy. But there is very limit print information walk through how to setup. With experience people that is no problem. But for newbie, youtube is your friend! - Built in On / Off switch for the 9W UV light, also had a small indication is on or off. - The hose is 1 inch size. Ehiem use 3/4. - SunSun media baskets also make from soft plastic. Which Eleim use slimier plastic! However. Eheim has better design form stacking. I do need extra time to be sure I put them in the right way and level. Again these baskets are bigger than the Ehiem 2075 - SunSun basket has no indication when is full. Ehiem and many other use transparency basket so the water level can be very easy to view. So far, I like the SunSun 304B with the performance and price, just can't beat it! Give it 6 months, will see anything change. At the end, don't expect paid for the Hyundai price for a Mercedes. But Mercedes not always better than Hyundai. Update after 7 months The canister is still stay quiet, smooth and have very strong water flow. I have perform complete cleaning 3x since new. No leaking or any problems. Completely bang for the buck from this guy. I am sure I will recommended to my friends! Change from 4 stars to 5 stars 20 months, working perfect as day one! getting other one for my planted tank soon To be honest, this HW308B is out performance Ehiem Pro 3. I have the Sun Sun for over 26 months. Every time i have to clean the Ehiem and wants to replace with the another sun sun. After 2.5 years of use. on last filter cleaning, I found a small piece of black plastic falls out. and I can't find anywhere to put it back. so I design to skip that after cleaning. however, it start to leak. I try different ways to fix it, but leak still happen, it looks like the water is over flow to the limit and start coming out, I think is something to do with that small piece of black plastic which I don't know how to put it back. SO I call it DONE. Just place an order for same one to replace it. for the price it worth to use it again!

### ⭐⭐⭐⭐⭐ Good Unit! Beats my Emp400
*by J***E on October 27, 2017*

Update 3: Changed my review to state I made a mistake. Used vasaline and played with o-ring and got it to ginally seal. After 2yrs running, tank looks great. Have another one upstairs on my showtank and have NEVER OPENED IT UP. It's been running for 1yr just like it was new and tank looks amazing. Don't overfill with filter padding, a little is okay. Think of biological (ceramic rings, those sink scrubbers). Been solid for me, love that it's just a benifical bateria keeping stud! 5 stars!! Great unit for the first 60 days in operation; even think it outperforms my 2 "Reliable" Emperor 400b on same size tank. BUT after the FIRST cleaning and reassembling, I come home to 5 gallons on the floor (thankfully concrete) and noticed a small constant flowing leak underneath gray latch. Opened up and made sure everything was seated correctly and fired up again; still the leaking persisted, this game went on to 2am. Went to Y*utube videos and forums to realize others have had these issues- most related to bad gasket- 'O' ring... not my case! Tried silicone grease, then teflon tape to bump out ring... no effect. After more various attempts on troubleshooting, nothing changed. Ended up putting tub underneath (as EVERYONE should do to hedge bets- leaking won't start immediately: mine takes 10-15 minutes after sealing unit, then steadly flows out- others who the o-ring was not the culprit I read haven't started until 2 hrs later). Most seem to occur after servicing. Trying to minimize water overspill and possible damages until I hear back from seller to hopefully rectify because the unit was doing its intended job and seems others are having good experiences- I'm apparently one of those that got a lemon. Meanwhile hundreds of dollars of fish and in limbo with one hob running the tank. Will UPDATE! *Got water expulsion greatly reduced (see video) by putting silicone around the circumference of light housing... REALLY, on a 2 month old unit!! Disappointing... LFK? Do you stand behind your products??

## Frequently Bought Together

- Sunsun Hw304B 525GPH Pro Canister Filter Kit with 9-watt UV Sterilizer
- AQUANEAT Replacement Canister Filter Pads Compatible with SUNSUN HW-304B/404B/704B/3000 CF500 Aquarium Filter Media Generic Floss
- Marine Color 9w Lamp Bulb, Spare Bulb for Sunsun Hw-303b 304b 404b Jup-01 Filter Cf400, Cf500, G23 2 Pin,

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*Product available on Desertcart Colombia*
*Store origin: CO*
*Last updated: 2026-01-28*