In article , Micky
writes:

Could someonw please explain what pearling is ? I hear it talked about
but have
never had an explination.

Pearling is when your plants visibly produce oxygen as a result of
photosynthesis, which chemically oxidizes water into molecular oxygen and H+
ions. Usually happens when you have lots of light and sufficient CO2.
Sometimes you'll notice small air bubbles starting to accumulate on the
undersides and/or tips of leaves, sometimes you'll see a stream of very tiny
bubbles floating to the top from a point (sometimes a hole from damage) in the
leaf or stem.

Dave Picklyk has some nice pictures on his website:

http://members.shaw.ca/davepicklyk/o2pearling-pics.html



Erica
http://members.aol.com/_ht_a/mitoem/mitoem/index.htm