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Sponge filters – Bonus bio filtration!

Sponge filter

Sponge filters – Bonus Bio filtration!

Sponge filters

Sponge filters are rising in popularity within the aquarium and for good reason. Sponge filters have many benefits, extra biofiltration being one which is always useful in any aquarium setting.

A sponge filter provides a vast area on which bacteria can grow, this means that they help to keep your aquarium water extra clean and healthy once they are established. It has been noted in some studies that sponge is actually one of the best materials to use as bio-media, as it provides so much surface area for bacteria to grow on. They also provide some amount of mechanical filtration which helps to keep your water crystal clear.

Sponge filter

Sponge filter power

Sponge filters can be powered by air, this works by using an air pump plugged into the sponge filter. As the air moves up through the filter it creates a small vacuum that pulls water through the sponge, much like how a syphon works.

This means that all those bubbling air stones in your aquarium could be giving you the added benefit of being filters too and still provide some oxygenation to your water.


Sponge filter 2


Other bonuses


Because sponge filters are air driven, they are not overly powerful, this makes them ideal for fry tanks. Raising fry is a big part of the hobby for many and filtration is really important to keep the water nice and clean so the fry grow well.

Filtration can often be too powerful for fry as they are easily sucked into power filters which usually means the ends of them.

Sponge filters keep the water healthy for them without causing too much flow for the fry to swim against giving them the best chance of survival.


Sponge filters can be purchased for as little as £5, sometimes less, so the initial outlay is pretty low. They are powered by air which means they are also cheap to run and dont suck up huge amounts of wattage. This is especially true if you are already using air stones in your aquarium, as it wont cost any extra to run that air stone as a filter.


Sponge filters are easily moved. They are only attached to an airline so are easily moved around your aquarium. This also means that if you need to set up another tank (hospital/quarantine tank), you have an easily moved filter that is ready cycled to go straight in with your new or sich fish.



sponge filter with fry


Add a sponge?

If you run an air pump on your aquarium then there is no reason not to add a sponge filter, they come in various sizes and provide far more benefit to your aquarium than an air stone does. Whilst an air stone will oxygenate the water by causing some surface disturbance as the bubbles pop, that is about where its advantages end.

A sponge filter will do that too, but it will also add a vast area to grow some nitrifying bacteria to ensure your aquarium stays nice and healthy. It will also provide some extra mechanical filtration to keep your water crystal clear.

So get those airstones swapped out for some more useful little sponge filters!



Here’s a quick video from Kev at KaveMan aquatics on his thoughts on sponge filters:




Here’s Kev’s from KaveMan aquatics video description:

The Aquarium Sponge Filter is probably the most efficient and economical filter an aquarium could ever have.

Not only does it have multiple benefits to improve the quality of your tank but its also very cheap, low maintenance and easy to use. I’ll also show you how to set one up and how to easily clean your sponge filter.

The aquarium sponge filter benefits may surprise you and you’ll be glad to have one handy! Want to see more content like this? Like the video (it helps a ton!) ? Comment if you made it till the end!

 Share the video with anyone you think it might help ?

GET YOUR FREE EBOOK on Simple Steps to getting Crystal Clear Aquarium Water from KaveMan aquatics: Here! 

Head over to the channel to check out KAveman aquatics other videos: Here!

About the author

James @Seriously Fishy

I am a fish keeping enthusiast with over 20 years experience. I currently keep American Cichlids (CA) which are my favourite fish to keep so far. I started Seriously Fishy as I noticed a large volume of people on various web pages looking for help with Aquarium basics. I created the first Seriously Fishy book to solve the issue in 28 pages, that led to the Seriously Fishy UK fish forum and blog.

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