Azoo Mignon Setup Question

[Gammawaves17]

so I have a 3 gallon tank with an Azoo Mignon 60 filter for a Betta tank. I have biomax media ceramic and a biomax 30 sponge currently in the filter.

My question is:

Should the filter sponge be on the top or bottom? I have seen online sponge on bottom and ceramic on top, but it appears water comes from the side, which I feel would make the sponge ineffective.

 

[75g Discus Tank]

Whichever way you feel would work, but I prefer having mechanical filtration filter the water before the biological filtration can filter the water.