Looks like you've still got a bunch of CO2 coming out of solution. Could still be fermenting, but it's definitely not infected in those pictures.
Oh wait, it's day 7? Yea your beer is likely still fermenting- that's just CO2 being produced by the yeast.
I can't be arsed to keep up this list of what's in the fermenters, but hey, check out the cool brewery I own!
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