Pearling leaves...?

> On June 22, Rene said:
> >The real pearling effect is only seen from wounds on the
> >leaves and usually from just one leaf on a particular plant.
> I have been witnessing this as well--with crypts and anubias mainly; a
> steady stream of micro fine bubbles from cuts and abrasions on leaves...?
> Any explanations?
> Best,
> Todd March

	From crypts and anubias? Really? I didn't think they 
photosynthesize fast enough. I know that all of my echinodorus and 
hygrophila  plants do, but I never heard of those genera doing that.