PH down...

Hey, i need some ph down, this says... well i'l just let ya see it,

http://cgi.ebay.co.uk/ws/eBayISAPI.d...MEWA%3AIT&rd=1

Question is, is that for soil ph as well as hydroponic?
im confused when it comes to ph, temps, humids stuff like that.
suggestions appreciated, cheers

That particular formula is for hydro.

Your soil pH down is in grandular form.

I dont see a problem with intermixing, but i dont grow hydro so i couldnt tell ya.