Swapping Filtration System - Advice Please

[Kirsty5]

I have been running a little 35 litre tank housing a Betta with an air pump and sponge filter and am considering swapping this for a small filter with spray bar.

Can anyone tell me if I should run the filter with said air pump and sponge filter together for a while or can I cut some of the sponge filter to fit within the filter and run this on its own instead?

If I should run them both in tandem for a while, how long for?

The reason for this is more space within the tank and ease of cleaning.

Many thanks in advance

 

[N0body Of The Goat]

If you can cut some of the old filter sponge and add it to the new filter with its own new media, but then run them both in tandem for 4-6 weeks...

 

[Kirsty5]

Brilliant, thanks so much and will do!