Fascinating!:thumbsup:

Been feeding in CO2 through a 1/4" hose right at da base of da DWC bush.
Wouldn't be a chore to pop a nice, clean, airstone on 'er and den, it's just a drop in da bucket, yah?
I'll have to try dat on a jug of nuted water to see what it does to da PH over time.
I think carbonic acid is relatively weak and I usually keep 5.2 - 6.2 anyway.
I figure most will bubble right through and be avalable to the foilage 'cause I run enough air through my buckets to approach the gas absorbtion capacity of the water.
What does dissolve should be rapidly displaced, and some will hopefully, be used by the roots.

Mahalo, Mac.
This is my "kine sing"!
Another "half-baked", no-budget, adventure!:jumphappy:

I owe ya one, bro.
Hope you no gonna stink da joint up wit' math though.

"I'm oft' to be da lizard,
A thunderfilled lizard at odds"

Weeze