Should bubbles be coming from this leaf?
Is this normal? Ignore the algae as I have been.
Ive seen that before in my tank too, right after a water change there was a really fast steady stream of bubbles for about a half an hour.
I see this a lot during several hours (until dark) after the water change, but never subsequent to that.
It is harmless.
"Pearling" is oxygen bubbling from the leaves as a result of very fast photosynthesis. Those who diffuse CO2 into their tanks frequently see this, if the light and other nutrients are balanced. One botanist told me I saw it after a water change because of the excess CO2 in the tap water.
Hm Its been going on for a few hours and I haven't changed the water in a week or two.
It is pearling, but a really steady stream from a single point usually means a small area of damage into a leaf vein. The bubbles are escaping oxygen and eventually will stop due to the plants response. Normally pearling is from a build up of oxygen underneath the leaves due to photosynthesis. Eventually the bubbles become large enough to escape or are dislodge by some force.
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