Thanks for the info. !! I'm in coco coir and I use 6 ml per. gl. . Start to finish, is that to much? I know to mix it in 1st. , as like you said, It can and will gell in some nutrients. Also raises ph !! Toughens plants up !! I only use it in coco, as I figure soil is already loaded with silica ?I believe you can give too much silica. I’d watch and adhere to the manufacture notes.
I’d also introduce it slowly to your grows. Don’t give them the maximum dose right away.
Also note that mixing some silica with certain nutes can cause a nite lockout or gelling of the silica.