One company i did try was raw and the raw silica was confusing to me cause it never changed the ph.
And on the other note to whomever posted it, ive done test grow side by side and silica is a real thing but its understanding it time structure and using it properly so many people lock out nutes and etc because of basic mixing mistakes but As a person who like using coco and testing it side by side, the natural gnats in coco that come in everthing and plus they love coco i have seen plants without silica would attract more and not have the natural pest resistance that silica gives to the cell walls so yeah no internet reading blah blah im old school i learn from personal experiences and also its noticeable in other plants i do in my garden like cucumbers peas and corn.