Promix is peat.
Never heard of the HP; it's the BX that cannabis growers use, so I looked it up... seems it's pre-ferted as well... 'micronutrients and macronutrients' are listed as components. pH range is listed from 5.5-6.5. That's quite a window... yikes.
You gotta get them into better medium.
That is only going to get worse.
http://www.hort.purdue.edu/hort/faci...s/proMixHP.pdf
I hate peat...
Flush with water at 7.5-8.0. Find a new soil. Repot at your earliest convenience.
stinkyattic Reviewed by stinkyattic on . Why has my Ph droped? I grow in soil, righ now i am in 2 gal. pots. I have 6 plants that are about 25-26 days through veg. I have been using only growbig mixed with rested tap water. I started at 1tsp/gal after 1 week of veg have worked my way up to 2 tsp/gal. My plants look healthy and all, but today when i watered and tested runoff Ph almost all of my 6 plants tested at around a PH of 5.... Why is my Ph droping?? I was thinking possible salt build up, I heard that FoxFarm products tend to create alot of Rating: 5