Grey/white spots on the bottom of a Brita filter, possibly mold

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My Brita filter after I returned home after two years.i should have checked it the moment I returned Have I been drinking mold for two months? What kind? : r/mycology

Mold or minerals? I opened up my water filter pitcher today to look at the filter piece and saw this. Any idea what is accumulating inside the filter? : r/Whatisthis

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What are these little green balls in my Brita filter?? : r/Whatisthis

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