Help to keep your aquarium sparkling with the Bacto-Surge high-density foam filter from Hikari. Made from light and airy sponge, this unique filter offers biological filtration, breaks down organic waste, and may even help to support better water flow. It's designed to be used in both freshwater and saltwater tanks—so aquarists of all kinds can benefit from this simple, straightforward solution! Use it for nano tanks, breeding or fry-holding tanks, quarantine tanks and with tanks that include slower-moving fish, such as the Discus.
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.
Before installation, soak the sponge block in aquarium water for at least five (5) minutes.
To clean sponge block, always rinse with water taken from your aquarium. Do not use tap or hot faucet water as this can damage the sponge block and impact bacteriological action.
When re-installing the sponge block, submerge in aquarium water and squeeze gently to remove all trapped air inside the microscopic pores. This allows the sponge block to operate properly.
For optimum performance, replace the sponge block every six (6) 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.
The Bacto-Surge® Sponge Filter requires a minimum of 30 days of use to operate peak performance. Care should be taken during this time to monitor your ammonia, nitrite and nitrate levels as the aquarium progresses through the nitrogen cycle. ClorAm-X® can help control ammonia toxicity during this period.
Amazing!! Works great!! A little bigger than the picture makes it seem. As a first time fish owner and doing this by myself I had to learn that It dose not come with an air pump the hard way. Other than that wonderful product!!!
on Apr 30, 2021
The size is deceiving! I don't have a problem with it being bigger than I would have liked, it just doesn't look fantastic in the background. It is a good hiding place for fish though so I'll give it that. It filters wonderfully though, my water was a bit cloudy and within a few hours, it was sparklingly clear. Shrimp will like to eat off of it so that's nice as well. Follow the instructions and it should sink down without a problem, just have to get the air bubbles out.
on Sep 5, 2021
They work well for my bettas only they float not heaven enough on bottom to stay in place.
Love this filter great price
on Jun 21, 2021
I absolutely love this filter the moment I put this in my tank my fishes went crazy. Now it’s has some permanent room mates. I am so happy with this product thank you chewy
bubble sponge filter
on Jul 22, 2021
This works great in my 20 gallon tank. I have dwarf frogs and plecos and they love it. Love that it’s a bubbler too!
So far so good
on Mar 21, 2021
This sponge is big.
Whole lotta surface for that bacteria to thrive.
Did have to make a small altercation to add my own air stone though, which of course will void any type of warranty.
Other than this I have no complaints.
on May 6, 2021
I put a powerhead on top to increase the circulation in my tank and this works perfectly! Highly recommend sponge filters
Not even close to what the picture looks like
on Jun 14, 2021
The filter takes up the whole corner of my 10 gallon tank. It’s huge!!!!
1st time Chewy Customer
on Nov 26, 2020
Perfect size for my 5 gallon Fluval spec shrimp tank.
Easy to order from Chewy. Free shipping. Arrived quick.
Seems to be working ok
on Oct 26, 2020
It takes a while, but I've started noticing the water is more clear and crisp looking. It's gentle enough that it won't trap my betta or push it around.