Just wanted to comment on cleaning the O2 stone. All I do is turn on the stone while submerged in starsan and turn the the O2 briefl to flush. Wen I'm finished aerating wort, I rinse and then purge the 02 stone with oxygen again in starsan and let dry. Have had no issues with infection after a dozen batches. Maybe just because fermentation starts so fast there is no time for bugs to take over
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