pumice

Originally Posted by onegreenday

i took a look at Wikipedia and rain water of Ph 4.0 is considered acid rain. You must be picking up something in the atmosphere to lower the Ph that much. Here's their info.

<<<Generally, rain has a pH slightly under 6. This is because atmospheric carbon dioxide dissolves in the droplet to form minute quantities of carbonic acid, which then partially dissociates, lowering the pH. In some desert areas, airborne dust contains enough calcium carbonate to counter the natural acidity of precipitation, and rainfall can be neutral or even alkaline. Rain below pH 5.6 is considered acid rain.>>>

Originally Posted by onegreenday

Considering the 'acid rain' at Ph4, what is your soil Ph there?
thanks
kim

Originally Posted by kailiwela44

the pH tester is used only reads between 4.0-9.0. Since it read the color for the lowest pH, i hypothesized that it is below 4.0. I did write that it wasn't accurate as far as exact pH, but more of a general area of what it could be.



I don't have a soil tester, but i assume it depends on where you live. Different parts of the island and state have their own Geo. On O'ahu, the soil can be different for every ten miles. Some places are more wet, dry, higher lower than others.

kailiwela44