Quote:
Originally Posted by Tom Barr
It's a simple test and the observation #1 shows that it's not due to degassing tap water etc, it's due to the gas phase exposure to air.
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First off I should state that I haven't done any specific experimentation just general observations over the last year or so of water changes...
I have a non CO2 tank and after a 50% water change (straight from the tap, not letting it degass) I get water bubbles everywhere, but they pop once and are gone. So in my mind they are not pearling.
Any plants that were exposed to air, have a tendency to produce bubble, pop, and produce more, which I take to be pearling. I've also observed that the longer the exposure to air the more the likelihood of pearling.
I also get pearling after the waterchange on my vallis when I have accidentally 'torn' one of the leaves. I get a mixed feeling from this - 'oh bugger I tore the plant
' and 'cool, loads of bubbles
'