Build DIY Double Bio Sponge Filter and How to Setup in Fish Tank:

In advanced technology a lot of fish stores will still recommend to use traditional sponge filters due to its multiple uses. However, sponge filters are also upgraded & it allows double sponges to better clean water & there are optional compartments which can be used to store bio media, & they can perform mechanical & biological filtration.

Please watch the video on unboxing, assembling & setting up DIY double bio sponge filter in aquarium and let me know your feedback in the comment section below.


DIY Double Bio Sponge Filter Setup


In video shared above I have installed a double bio sponge filter in my 4 feet tank with extra compartments to store bio media.

The size of the sponge filter really depends on the size of your aquarium & the quantity & type of fish species you want to keep in your tank. I have just 3 breeder guppies in 4 feet aquarium so I bought a medium sized bio sponge filter & installed it next to my aquarium heater.

  • What is a sponge filter & how it works?
  • How to setup double bio sponge filter?
  • Why using double bio sponge filter is better than using a normal filter?
  • Why I setup double bio sponge filter in my aquarium?
  • What are the pros & cons of double bio sponge filter?

What is a sponge filter & how it works?

A sponge has pores that can be used to remove the debris from the water flowing through it. Sponge filter allows water to flow through the sponge & it does not allow fish waste to flow through it while small particles can pass through the sponge filter. Sponge filters can provide mechanical & biological filtration. Sponge filters are best for most of the aquariums but in some cases you have the best option to use a sponge filter. They can allow gentle flow of water. This allows for setups for betta, fry, & shrimp aquariums that thrive in low flow filtration.

How to setup double bio sponge filter?

DIY Double Bio Sponge Filter Setup
DIY Double Bio Sponge Filter Setup


Unbox the product & attach the telescopic tube which is able to slide in order to increase the height of the filter. Putting together bio sponge filter is very simple. Double sponge filter is twice as powerful as a normal sponge filter. It comes with a couple of suction cups to make sure it can attach properly to the aquarium. They come with the compartments & bio media can be stored in these compartments. It is very simple to attach the compartments. Remove the filter & pipe, & slide the compartment in so sponge will filter water & just clean water will pass through the bio media. The couple of big sponges can be removed easily when cleaning the filter. Attach the hose with holes which is used to suck the aquarium water, slide the sponges which can remove the debris & connect the air tube so there is no need for a pump.

Why using double bio sponge filter is better than using a normal filter?

Double bio sponge filter which can hold bio media works like a typical sponger filter, except there is some space to add extra compartments which is optional & can be used to put bio media otherwise it will act as a normal sponge filter. Double bio sponge filter is better than a normal sponge filter because it has 2 sponges which can provide better cleaning than a normal sponge filter. It has additional compartments for bio media which can help in growing beneficial bacteria. No air pump is required to operate a bio sponge filter which makes it cheaper than other filters. It can circulate water uniformly throughout the aquarium because it is able to push water & keeps tank warm if you have installed a heater close to the filter.

Why I setup double bio sponge filter in my aquarium?

Setup double bio sponge filter in my aquarium
Setup double bio sponge filter in my aquarium


The 2 sponges suck water & then water passes through the 2 compartments which can hold bio media & then exit the filter using the telescopic pipe. The compartments are round & it might be difficult to fill them with your desired bio media. In my setup I put some ceramic rings at the bottom & then ceramic balls on top or I would have not filled the space available in these compartments. I used a bottle filter in my aquarium. In my setup heater is located on the right side of my aquarium & water temperature at the right half is warmer than the left half of aquarium which is the reason why I replaced the bottle filter with a double bio sponge filter which can push the water sidewise & maintains the same temperature throughout the aquarium. It is operated by an air pump which helps in aeration & adds more oxygen in the water which makes it better than filter operated by pump.

What are the pros & cons of double bio sponge filter?

Double bio sponge filters can only provide mechanical & biological filtration & it does not offer chemical filtration which is the biggest negative aspect of these filters. In a beautiful aquarium, hobbyists do not like to add a big double bio sponge filter because they are not aesthetically appealing. However, double bio sponge filters provide relative simple maintenance & there is no need for replacing media as expensive filters require. Double bio sponge filters are best suitable in a fry tank where young fish could be sucked into the intake of normal filters & the young fish are delicate & requires more beneficial bacteria & oxygenation that double bio sponge filters can provide.

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