That is just the soil ph. I use a ph pen with moisture sensor. I have not tested runoff ph, I guess that is my next course of action. I am just wondering why they are yellowing, and what is causing my brown, curled leaves so that I can make sure it doesnt happen next time around.
tipsyfiend23 Reviewed by tipsyfiend23 on . HELP!!! Nutrient Lock Out? Hi. This is my first grow, and I think my girls are very sick! My set up includes a 600w HPS bulb with daystar reflector. I am growing in Fox Farm Ocean Forest soil, using tap water which I let sit overnight before using. I switched my lights to 12-12 on May 15th, so I am 6 weeks into flowering. My ph is stable at 6.8. I had purchased Humboldt Nutrients Bloom, and had been adding 3ml/L of water. Now I am having a severe problem with leaves yellowing and dying. I am watering once every three Rating: 5