Duuuuuuu
Read Chris read....
Rhino is potash based
I'll probably run em both....why the hell not
Lol
You can for sure use more than 1 silica source. I use rock dusts (a type of Basalt high in Silica - long term release in soil) and Pro-tekt foiler and also HorseTail fern tea foiler. Hard to over-do something that is one of the most prevalent elements in the earth's crust. We can probably over-do Pro-tekt tho... I just use a little bit but I use it pretty often.