Folks call this "pearling" in the aquaculture world and it's a sign you have a good, healthy tank. Ironically, many people will add CO2 into the water to encourage plants to grow fast enough and large enough to this at such a high rate.
>>5040769 (OP) >>5043269
In OPโs video, thereโs pearling underneath the leaves but the stream of bubbles we see coming out is due to tissue damage. Plants keep oxygen in their stem to keep themselves upright and this happens when you cut them.