Correction- the RO water from walmart is 7.0 and tap at 7.3. I mixed some Grow Big and CalMag in a gallon of tap water and remeasured it and its at 6.8. I used the RO water to test my runoff and it was at 6.9. So maybe the PH was ok before Im not sure though. I wonder if it is just a calcium def and/or rootbound
chongman420 Reviewed by chongman420 on . NEED HELP DIAGNOSING PROBLEM!!! PICS So i have this reoccurring problem with the last couple grow attempts. I use Earth Juice Grow, Calmag, and Superthrive for veg with 2 tsps of high nitrogen bat guano. I use FFOF soil and I use RO water. I dont have a ph meter but I water them with plain water every other time. Temps are between 69-76. Any advice? :( Rating: 5