Hikari Bacto-Surge High Density Foam Filter, Large

By Hikari
Rated 4.4082 out of 5 stars
$11.29Chewy Price
$12.99Chewy Price
No Longer Available
This item may be discontinued. We're not sure when it will be available again.

About This Item


  • This foam filter is designed to be easy to install, easy to maintain and easy to clean.
  • Helps to break down organic waste and offers your tank biological filtration.
  • Optimized for both freshwater and saltwater tanks.
  • Ideal for nano tanks, quarantine tanks, fry-holding or breeding tanks.
  • No moving parts means it can't harm your small fish.

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Questions & Answers

16 Customer Questions

What size for 20 gallon
Answer by EmmaOct 01, 2021
It gives you a size chart, but: The small one is sufficient for a 20 gallon tank. It's actually pretty big. I use mine along with my HOB filter to make the water extra sparkling clean.

is this filter a one month use and clean and reuse ..How many times? or discard monthly.
Answer by ChewyFeb 19, 2019
For optimum performance, replace the sponge block every six months. Allow the new block to soak in your aquarium water for a minimum of two weeks before installation to allow it to colonize with nitrifying bacteria.

Why do I need to replace it every six months for optimum performance? I mean it is meant for the beneficial bacteria to colonize so shouldn’t you be able to use it for as long as the sponge is still in good condition after rinsing it with aquarium water each month?
Answer by ChewyJun 04, 2019
It's recommended to replace the sponge block every six (6) months for optimum performance.

Can this be used in any gallon size?
Answer by ChewyOct 02, 2019
The Mini size can be used for tanks up to 10 gallons. The Small size can be used for tanks up to 40 gallons. The Large size can be used for tanks up to 75 gallons.

ReviewsWrite a Review

Rated 4.4082 out of 5 stars
49 Ratings
Would recommend to a friend

49 Customer Reviews

Rated 5 out of 5 stars
By Skyler on Mar 7, 2022

great addition for quarantine!

This was very helpful in setting up my quarantine tank. I already had everything except a heater and filter so buying this filter helped a lot. It was one of the only ones I could find the would work for my small quarantine tank. Works perfectly and you can use it in different ways. I used it as a bubbler. Keep in mind it doesn’t come with the pump or the tubing but that wasn’t too much of a problem considering there’s different ways you can use this. We also now have babies in the tank and there’s no worries of them being sucked into a filter

Rated 5 out of 5 stars
By onna on Mar 31, 2022

Best filter I've used

This filter is amazing! I've had it for a few months in my goldfish tank and it keeps the water clear and parameters in check. The price is unbeatable. Cheap but does the work of a $60 dollar filter.

Rated 5 out of 5 stars
By Sonia on May 5, 2022

Worked just fine

Filter work as expected. Happy with the right amount of bubbles. Not to strong just right to not scare the fish.

Rated 5 out of 5 stars
By Lana on Jan 24, 2022

Prefect clean water finally.

I kept buying power filters that just stopped working after a couple weeks. I have gold fish which are dirty fish but this is keeping the tank crystal clear. It's only drawback is that it's ugly. Dead fish are a whole lot uglier so it's more than a fair trade. The best part is price. Even with having to buy an air pump it's cheaper than the power filters.

Rated 4 out of 5 stars
By Christine on Jan 29, 2022

Works great

I read the instructions and soaked it in the tank for a bit. Squeezed it and had no problem sank right to the bottom. My fish seem to like it, I also have a HOB filter on my 60 gallon tank with live plants

Rated 5 out of 5 stars
By Autumn on Jan 22, 2022

Lots of bubbles

This filter does sink, but it may take some time for it to really soak up the water. It has to be held down for a while until then. This is great for a 10 gallon with snails or other invertebrates. Might be too much flow for small fish.

Rated 2 out of 5 stars
By Tony on Jan 15, 2022

Not the greatest but is what it says

Yes it is a sponge filter but doesn't have a internal air stone and not a one where you can add your own with out a lil bit of modification. The air movement without a air stone is kinda a joke I thought my air pump was broken at first

Rated 4 out of 5 stars
By Emma on Oct 20, 2021

Great for Any Aquarium

Anyone with goldfish knows, they're very dirty. Ammonia builds up fast, so you need plenty of biological filtration, and surfaces for good bacteria to grow. This does that pretty well, and helps circulate water and oxygen. I use it in my 20 gallon for my small goldfish alongside the HOB filter, and it really helps keep things cleaner. The base is weighted so that the sponge doesn't float away. I've also used a smaller version in my shrimp, betta, and fry nano tanks. It works really well there, keeping things clean without sucking up delicate fins and bodies. Don't forget to buy airline tubing and a suitably sized airpump.

Rated 5 out of 5 stars
By filter on Jan 24, 2022

hikari bacto surge filter

this filter is great if you are thinking about buying this please do

Rated 1 out of 5 stars
By MunchieMom on Oct 12, 2021

Not good at all

Base is not weighted and the sponge just floats to the top. It needs either a weighted base or something to anchor it to the tank. For the price you can get better like Seapora.