Nullis
Moderator
EARTH and sea, they can use both if they want lil bro, ahha
![Hit Wall :wall: :wall:](/styles/smilies/wall.gif)
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Apparently the oyster shell just seemed to go along with the whole 'Ocean Forest' theme... along with the fish emulsion, crab, shrimp and kelp meal... big-headed bro, hehe. Personally, I think the only reason why it is "Earth and sea" is because guess what the Earth Juice motto is: "A blend of good things from the land and sea".
For the last time; no lime is going to lower pH. I guess making the font bigger doesn't help get it through to people, either.
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Soil/humus/peat has CEC or cation exchange capacity. This means it has all these little 'exchange sites' with a negative charge that attract and hold onto cations, which are positively charged ions. Sphagnum peat moss for instance, has lots of 'reserve acidity' which is primarily the result of H+ at these exchange sites. Lime neutralizes the H+, which reacts with the CO3 or carbonate as the lime dissolves, and ultimately those exchange sites become saturated with Ca++ and Mg++ cations.
Various things affect the pH of the soil solution. Even the plants themselves as they absorb cations like Ca++, Mg++, K+, Fe++, NH4+ and many others by exchanging with an H+.
http://soils.tfrec.wsu.edu/mg/chemical.htm
http://www.spectrumanalytic.com/support/library/ff/soil_buffer_ph.htm
http://www.greenhousegrower.com/magazine/?storyid=47