Soilless ph help

I am starting a new Big Bang auto-flower in miracle grow Expand'n Grow compressed potting mix
NPK: 0.45-0.15-0.30
Max moisture 15%
organic matter 85%

Miricale Grows page for expanded grow

LINK : http://www.scotts.com/smg/goprod/miracle-gro-expand-n-gro/prod10570002/

I was wondering if I should use a hydroponic ph of 5.5 or a soil ph of 6.8

I may be mistaken but the potting soil has soil in it....
so why is this a soilless
I go hydro my PH runs 5.8-6.1

for soil I think it is a higher range?

you got soil dude.

I am not a fan of miracle grow, it has not worked for me in the past.
I like and use Fox Farm soils.
Fox Farm Happy Frog for seedling-2 month repot to Fox Farm Ocean Forest. Food enough for another 2 months in the soil.

Just PH your water.

Bless,
DZ

I agree you growing in soil, ph should be 6.5.