can't find enough info in this thread to figure it out.
sounds like you're not supposed to ph with that nute line and media. impossible to tell for sure with the info given. can you spell the name of the nute line and media without spelling errors?
edit : while at it have read through this :
It is VERY hard to help diagnose plant problems if we don't have all the required information.
EXTREMELY IMPORTANT
The ONLY way to receive optimal feedback and support is to provide photos!
Photo Gallery Guide - How to Resize, Upload & Post Photos
REQUIRED READING FOR ALL NEW GROWERS!
How to Grow Marijuana Everything You Need to Know
REQUIRED INFORMATION FOR GROW SUPPORT
What Strain is it?
Is it Indica, Sativa or Hybrid? What percentages?
How Many Plants?
Is it in Vegetative or Flowering Stage?
If in Vegetative Stage... How Long?
If in Flowering Stage...
try and give us the info needed. right now you're only gonna get a dart board guess with what you have given.