A little late, but the episode gave us something I've been suspecting for a while now. When Rodney and Radek are working on the Replicator block for the attack, Zelenka gets called away to what turns out to be the infirmary, to fix their molecular generators.
One of the things I wanted them to address has been their supplies. When the expedition originally embarks, they bring a lot of stuff with them: food, clothes, equipment, weapons, ammo, etc. But things tend to get used up, especially in a line unit. And after the Genii tried to take the city, they left with a lot of the Atlantis medical supplies, but the expedition has more medical supplies not too long after that. Even if they held some in reserve in case the main stock gets depleted, and later had the Daedalus to make supply runs, that's still a lot of materiel being used up.
This is not a rip on plot holes by any means, I'm just happy that TPTB took care of this. I mean, a race as advanced as the Ancients would have to have some kind of technology like that, just to support their civilization.
Though it appears that the generators in the kitchen have trouble with the color blue, at least in jello.