5.2 to 6.0 is a safe Ph range for soil less grow mix. Yes there are strains that prefer a higher Ph then the normal range of Hydro Ph but not many of them.

5.5 to 5.8 is the target number you are looking for in Ph.

Did you do a proper Ph balance with your grow cubes before you started?
(Soak them in Ph adjusted water of 5.2 for 24 hours before you used them)
Zandor Reviewed by Zandor on . Why are they drooping? My foaf was wondering what is causing his plants to droop. He was thinking maybe over watering so he cut the water schedule to 15 min every 1.5 hours or so and they are still drooping... Any ideas? Rating: 5