ya bro.. many many bubbles and air will be trapped in pores of media.. pores in the sponge.. and many nooks and crannies.. mine took 2-3days to clear.. lol.. i think what fluval says about the problems is not when u just set up ba.. but if u set up for quite some time and suddenly got micro bubbles then maybe is the problems that they stated.. i would leave it and monitor a few more days.. cos if u open up the canister again, new air would get trapped inside..
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