CO2 bubbles collecting in Nutrafin diffuser
My diffuser had a cracked rung, so make sure your's isn't similar.
Hagen replaced mine for free.
Also make sure your unwanted snail population isn't causing the bubble
to jam.
And also make sure that the blue-green algea accumulated on the rungs
is kept in order. If it gets too plentiful it'll make the bubbles
stick...
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