that's normal the one on the left gets the most put onto it.
So it says to replace the sponge after 2 months, but if this is after a week... just seems odd.
The sponge I just replaced was totally black, and for some reason it was out of it's holder and sitting on a piece of metal, oozing everywhere. I just don't want that to happen again.
They start to swell after a couple months... but it is normal for them to be wet and look saturated. That thing just drains directly into the waste tank and it's job is to keep the nozzles wet by squirting ink on every pass.