Can't you just mix Diatomaceous earth into the mix it's readily available silicone and dirt (pun intended) cheap
you can but similar to potassium silicate, its not in its full bio-available form. they are valuable as amendments but the acid seems like supercharged ready to rock steroids. basically, as i understand it, the plant and microbes/bacteria in the soil would digest the dEarth or potassium silicate down into basically monosilicic acid. so when you buy the actual acid youre buying the pure crack baby.
im fully hydro and plan to stay that way so the idea of an eye dropper in a bubble bucket is super appealing.