This one of my Northern Lights photo girls. She’s about 6 weeks old, I’m running the green planet MediOne 1 part nutrient kit and PHing my nutes and water to 6.5. She’s growing under True Northern Lighting 238w QB fixtures at a height of 24inches.
This plant has been slowly getting lighter in colour and has been developing these brown almost what look like rust spots. Any thoughts?
[@Matthew A Mackenzie] what type of medium are you using my friend? I think it’s definitely a PH problem.
I’m using Pro Mix Hp. Do you think i need to drop it down a bit?
@Matthew A Mackenzie Best thing to do would be PH correctly 6.3 to 6.5 is good and catch some run off and see what PH that comes out at.
@Admin BLG gotcha. So what would you say is the best way to correctly PH. Do I need to wait longer when I add my ph up or down and then measure ph again? And in the event I am get a high ph of my run off, what would be my next step?