Basically what all of those bottles are is a form of silicic acid. Silicic acid is what the plants are able to take up. You can google Hydrated silica and that is what those bottles are, but they contain a counter ion (potassium) that keeps it from decomposing to water and silica. Hydrated silica is found in diatomaceous earth but I do not know if silica hydration happens in the soil (I doubt it unless the plant facilitates it). But it must in very small amounts because all plants contain small amounts of silica. I only use DE now but I do notice the plants could benefit from more silica. If you want the results you can see then protekt or agsil is the way to go.
I would NOT use azomite. Stay away from aluminum silicates. That rapidly decompose to aluminum and silicate with the help of our microbe friends. Aluminum causes Alzheimer's stay away!
don't sweat that too much brother, the ph has to drop WAY down, like waaaaay beyond what your plant can live through.
If I recall it's like at least 4.0 to start to break down.
They don't rapidly break down at all though man.
It's the acidity that makes it breakdown, not the microbes, although the fulvic and humic acids created by the compost process may..
But not significantly, in the rock dust world the granite dust is more dangerous.
Langbeinite, gypsum, soft rock phosphates, i'd go with those over azomite, especially if you are re-using your soil or applying any fulvic acids.
If aluminum is really a concern though, i'd look at any and all beauty products.... antiperspirants in particular...
I do agree with you though, there are better minerals to add
