RE: [APD] To pearl or not to pearl...

["Douglas Guynn" <d_guynn at sbcglobal.net>]

I've been through this discussion before and no one could explain to me
where the gasses for super-saturation come from.

Most, if not all, municipalities have water towers that provide the
necessary water column to deliver the pressure you see at your faucet. The
water in the towers is not supersaturated, or the gasses would evolve in the
tower. If the water becomes supersaturated after it leaves the tower,
someone must be injecting these gasses in the line somewhere.


	Robert T. Ricketts, Jr. wrote:

	Freshly drawn tap is commonly saturated or supersaturated with
gases, so
	some release of gas in the form of bubbles (false pearling) is
common.  But
	also from the same super-saturation, any O2 generated by the plants
will not
	likely dissolve, but appear as true pearling.  If CO2 happens to be
one of
	the gases present in excess, it could in turn boost photosynthesis
and
	result in additional true pearling.  Don't dismiss the possibility
that true
	pearling is involved quite so quickly or cavalierly.

	Robert


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