Which way should my cartridge filter be facing??

[sholee]

I've was browsing Amazon website and looking at customer pictures of the tank I own.. and i realized that I've possibly been putting in my filter cartridge the wrong way all this time! Which way is correct?? My cartridge is currently like picture 1.

1)

2)

[cjconcepcion]

i honestly dont think it matters as long as the water goes through the cartridge :)

[Mo]

The second way. But it doesn't matter either way, as both times the water go's through the filter cartridge.