http://npk-industries.com/silica.html
This is what I just bought for my supersoil, can use as a foliar too
I actually recommend all the RAW products, seem legit.
This is what I just bought for my supersoil, can use as a foliar too

...that form is really pH squirrely, and is why it's uncommon in formulations....
yikes, that's ridiculous! It's not like the K form is poorly available,... 0-0-0.6 has nothing to do with pH, but note, there's some source of K in there with that 0.6 value,...