SunSun HW-603B Aquarium Canister Filter, 20-gal

By SunSun
Rated 4.1429 out of 5 stars
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$47.06Chewy Price
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Fish TypeTropical Freshwater, Marine FishTropical Freshwater, Marine FishMarine FishTropical Freshwater, Marine Fish
Aquarium TypeFreshwater, SaltwaterFreshwater, SaltwaterSaltwaterFreshwater, Saltwater

About This Item

  • Canister filters tanks up to 20 gallons with filter pads at a rate of 106 gallons per hour.
  • Works with freshwater and saltwater aquariums, and can be used as a standalone or pre-filter with other canister filters.
  • Has extra spaces so you can use additional filtering media like mechanical, biological, and chemical filter agents.
  • 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.

Questions & Answers

12 Customer Questions

Does this have a pump
Answer by ChewyApr 05, 2018
This does not have a pump. Only Hoses, connectors, and filter pads. It’s easy to use by simply filling with water and turning on to start siphoning water into the filter.

If used as a pre filter do you detach pump?
Answer by ChewyNov 09, 2017
The Canister can be used as a filter so you wouldn't need to detach it and use a different filter.

Can this filter be used for aquatic turtle tanks?
Answer by ChewyJul 04, 2018
This aquarium filter is 100% suitable for both fresh and salt water.

What size tubing fits the inflow and outflow?
Answer by ChewyJul 20, 2019
The inflow and outflow on this filter measures 12mm internally and 16mm externally.

ReviewsWrite a Review

Rated 4.1429 out of 5 stars
7 Reviews
Would recommend to a friend

7 Customer Reviews

Rated 4 out of 5 stars
By meisme on Jun 10, 2021

really good

I bought this for a 29 gallon aquarium and it works really well I don’t have much stocking though so take that with a grain of salt

Rated 5 out of 5 stars
By MelH on Feb 1, 2019

Quiet, no leaks

Got this for a 16-gal wide hexagonal tank. Setup was no problem, and using the single-outlet head aimed parallel to the tank glass, it wasn't too much current for the tetras and sparkle/pygmy gourami inhabitants. Rums quiet, would definitely recommend.

Rated 5 out of 5 stars
By Montrose on Jun 12, 2018

Quiet and Efficient Filter

This filter is quick and easy to assemble. Intake and outflow (with spray bar) currents are not too powerful for fish. The canister has a series of gradient sponge filter pads, with plenty of room at intake and outflow points for bio media, such as volcanic rocks, Matrix, plastic bio balls, ceramics, floss, ect. Keeps water clean and clear with the large water volume turn over. Pump is quiet and does the job. Canister and tubes give your water system approximately an extra 2 quarts of water, (not accounting for water displacement by type of filter media) This is an added plus for any, especially small aquariums.

Rated 1 out of 5 stars
By bob1968 on Jul 23, 2018

SunSun HW-603B Aquarium Canister Filter, 106 GPH

i recieved this canister filter saturday july 21,i am useing it for my 20 gallon aquarium,it is making the water cloudy,i don`t know what`s wrong, maybe needs a bigger one.

Rated 5 out of 5 stars
By ChaosBunny on May 8, 2018

Perfect for my 10 gallon betta tank with some slight modifications!

I squeezed a layer of carbon and zeolite crystal between two of the sponges. Also, I used some more piping to make the intake go lengthwise on the back of the tank instead of straight down to help avoid my sand. If you get this use the suction cups to hold the tubing to the glass of your tank instead of using it to hold the piping for the intake/output.

Rated 5 out of 5 stars
By hulk on Apr 18, 2018

Turtle tank yes awesome

Yes I love this filter works great for my turtle tank I bought one going to have to purchase another one because it works so awesome

Rated 4 out of 5 stars
By fishdude on Jan 13, 2018

Betta tank filter

This is the second one I have bought. I use them on 5 gallon betta tanks. They work great. Easy to set up. I like canister filter over hob and these are good for the price.