WTF. I cant seem to get my ph straight. I put in 9.5 this time and I got one plant with a 7.3 runoff, one at 6.8, and two right around 5.5-5.4. My last grow I just put in 8.5 and got out 6.5. I am using the same brand of soil(ffof) soil. I dont understand why they are varying so much. What, do I have to mix 10.5 for two plants and low 9's for the other two? Anyone have to mix seperate ph for each plant?