Puratek di cartridge

[lushuk]

Hi folks, anyone know where this sponge fits in the di cartridge, the doughnut goes on the bottom but I’m not sure where the little round one goes, anyone know?

 

[jsker]

The foam sponge is usually at the top so that fine media does not leak out.

 

[lushuk]

The foam sponge is usually at the top so that fine media does not leak out.

Thanks I'll go with that, was told the other end but did not seem right!