i've done 4 batches one month ago, one per day, day after day.
My batches now are of 60L, and I use 2 30L fermenters for each batch. 2 of the 4 batches are the "same recipe", so I have 4 fermenters in "same conditions".
So, bubbles stopped a long ago, there's no activity on any fermenter, beside 1 of them.
What could be happening to it to restart to bubble? It can be a sign of too much time in primary? Never take so much time in primary, always bottled after 1 or 2 weeks, but reading here make me feel encouraged to spend more time. I live in Brasil, my room temp is sigthly higher than the optimal.
Thanks in advice.