Eyeoftheworld
Stark Raving Sane
I've been under the impression that the bioavailable form for plants is monosilicic acid.I believe so it says it is 10% Silicon dioxide derived from Potassium silicate. Usage is between 1/4 to 1 tsp. per gallon. and can be used for a foliar spray. It says it is extremely alkaline but that you should mix to water before nutes so I guess you can't use it to adjust Ph.