SunSun HW-602B Aquarium Canister Filter, 20-gal

Deal
Skip image gallery
Slide 1 of 4
$46.18 Chewy Price
Promo, Spend $100, Get $30 eGift Card with code NEWYEAR
Promo, New Customers Only: Spend $49+, Get $20 eGift Card + Free Shipping with code: WELCOME
In Stock
FREE 1-3 day delivery
Free 365-day returns

Pay in 4 interest-free payments of $11.55. .

About This Item

Details

  • Canister filters tanks up to 20 gallons with filter pads at a rate of 106 gallons per hour.
  • Has extra spaces so you can use additional filtering media like mechanical, biological, and chemical filter agents.
  • Works with freshwater and saltwater aquariums, and can be used as a standalone or pre-filter with other canister filters.
  • Includes hoses and connectors to get started for an easy, no-mess installation.
  • Easy to use and setup and doesn't require any manual siphoning.

Instructions

Questions & Answers

9 Customer Questions

I have a 12 gallon Bowfront with a male Betta and a few other fish, and I was wondering if the water flow is too strong for a Betta? Or is it adjustable? Thanks!

Answer by Chewy • Aug 12, 2018
This filters contains a flow control valve to let you decide best flow rate which works with freshwater and saltwater aquariums.

can this be used with a Sunsun 704b as a prefilter (is the hosing compatible)?

Answer by Chewy • Jul 22, 2019
This filter can be used it on its own or as a pre-filter to other SunSun canister filters.

Could this work for a 5 gallon tank?

Answer by Chewy • Apr 09, 2024
The canister filters tanks up to 20 gallons with filter pads at a rate of 106 gallons per hour.

does this have space for a heater or uv light

Answer by Chewy • Dec 17, 2020
These are the dimensions for this item Dimension: 5.7" L X 5.7" W X 10" H.
Reviews
Write a Review
3.7
Rated 3.6 out of 5 stars
20 Ratings
Terms & Conditions

17 Customer Reviews

Rated 5 out of 5 stars
By Alexis on Jun 22, 2025

Powerful little filter

Running this on my 20 gallon long aquarium, and it is moving water well, which is what I needed. FYI though, it is designed for rimless aquariums, mine has a rim

Running this on my 20 gallon long aquarium, and it is moving water well, which is what I needed. FYI though, it is designed for rimless aquariums, mine has a rim so I had to jerry rig the outflow for it to stay in place. Otherwise good value.

Rated 3 out of 5 stars
By Omar on Nov 11, 2024

Ok canister for the price. Nothing comparable

Item has decent slow for a 5 gallon guppy or betta tank. The filters that come with it are foam only so you will need to add bio rings and charcoal. The filter

Item has decent slow for a 5 gallon guppy or betta tank. The filters that come with it are foam only so you will need to add bio rings and charcoal. The filter needs to start up by siphoning water into the tubes manually to start up which I hate about this filter coming from a Fluval brand on my larger tank

Rated 1 out of 5 stars
By David on Apr 28, 2024

No Good

I bought this for a water bowl for my dogs and cats. It is just a simple 5 gallon tote. But this filter could not hardly pump water through it. It did not filter

I bought this for a water bowl for my dogs and cats. It is just a simple 5 gallon tote. But this filter could not hardly pump water through it. It did not filter squat and continuously would stop working as if there was air in the filter. I tried to elevate the water bowl into a counter to see if it would help with the filtration (assuming gravity would help). But this pump just crapped out and would not filter the water. It was the slowest trickle. Like drip irrigation or something. I would not even recommend this for anyone. I wound up donating both to the local humane society to see if they could use them in some sort of filtration. I kinda feel like I flipped the humane society off with that donation, but it was useless here. 😕

Rated 5 out of 5 stars
By Jacob27 on Apr 8, 2022

Great filter for the price

For a really inexpensive filter I wasn’t expecting much but figured it couldn’t hurt anything trying it. Basic lock top canister with everything you need included

For a really inexpensive filter I wasn’t expecting much but figured it couldn’t hurt anything trying it. Basic lock top canister with everything you need included. Only thing I changed was adding some carbon and quartz tubes to the filter for better results than strictly sponges. The only bad thing is the instruction manual if you have never set a canister up will be difficult.

Rated 5 out of 5 stars
By SodaPunch on Apr 3, 2021

good filter for dafishes

Have a 20 gallon and this thaaangs perfect, easy setup and adjustable flow rate, 2 different outflow pieces or whatever they’re called, if you’ve never had a canister

Have a 20 gallon and this thaaangs perfect, easy setup and adjustable flow rate, 2 different outflow pieces or whatever they’re called, if you’ve never had a canister filter like me then this is a good starter most definitely recommend

Rated 4 out of 5 stars
By Daniel on Mar 6, 2021

Sun-Sun Filter

Cheaply made. However it doesn't leak & is very quiet. Does the job for much less than Ehiem.

Cheaply made. However it doesn't leak & is very quiet. Does the job for much less than Ehiem.

Rated 5 out of 5 stars
By Sara on Dec 16, 2019

Works great!

It definitely helps keep our Axolotl tank clean. It definitely helps keep our Axolotl tank clean.

It definitely helps keep our Axolotl tank clean. It definitely helps keep our Axolotl tank clean.

Rated 5 out of 5 stars
By Jackie on May 31, 2019

Quiet filter

I love this filter! It is a fantastic pre-filter for our bio-tank. We are getting a second one to use as the cleaning filter. Easy set up and no ugly filter hanging

I love this filter! It is a fantastic pre-filter for our bio-tank. We are getting a second one to use as the cleaning filter. Easy set up and no ugly filter hanging in the tank.

Rated 4 out of 5 stars
By Matt on May 22, 2019

Perfect for a nano aquarium.

This canister filter is perfect for my 10 gallon aquarium, it was actually easy to set up I have never had a canister filter and I still managed to know what to

This canister filter is perfect for my 10 gallon aquarium, it was actually easy to set up I have never had a canister filter and I still managed to know what to do so the minimal instructions were fine, the suction on it isn't the best but for a nano tank it does fine, it's super quiet surprisingly, one thing I did not like is I had to put it in a bucket to hold it up because the pump on it makes it fall over even when it is full of water, other than that it's well worth the money and is better and more customizable than a hang on back filter.

Rated 3 out of 5 stars
By Dede on May 12, 2019

Does the job for now.

Wanted a change from HOB filter on 20 gallon long with clawed frogs. Wanted something with less vibration and calmer water. Bit of a pain to get it working initially,

Wanted a change from HOB filter on 20 gallon long with clawed frogs. Wanted something with less vibration and calmer water. Bit of a pain to get it working initially, but it is quiet and seems to be working well, keeping water clear at least. The attachments are flimsy, I cracked one of the 'U' pipes trying to get it to fit rim of tank (fixed with silicone) and I made larger holes in spray bar. I do prefer the more powerful HOB type, but the frogs seem to prefer this one. I don't regret buying it, but I don't think I'd buy another one.