I literally HATE AN
they prey on growers!!!!!!
they are completely full of shit and so are their reps
if you want to add silica I would start at seed stage
silica has many properties that help the plant
strong stems/strong leaf/difficult for bug and mold penetration/stronger cell walls/
resistance to heat and drought
I read an article from AN stating that silica makes larger and more potent trichome heads
THEY ARE FULL OF SHIT!!!!!!
it does no such thing
if you have silica then add it now and run it till flush/leach
if you are in coco you can add
calmg which usually has aminos in it but if you are using ph perfect nutes for coco then it is not necessary
the base nutrients have everything you need to grow from seed to harvest
I would recomend once a week feeding some compost tea or a bacteria/fungi inoculant......like say every sunday
it will help break down nutrients and also protect the roots
or you can use something like
hydroguard