Water with 5.5 ph. Get some sulfur from the depot. Sulfur is a slow release top feed pellet that lowers the soil over time. The best way is to cheat PH by having soil that is alive with beneficial fungi attached to roots. If you dont get ph down in time the plant will drop all its leaves and make new ones dark once the ph is fixed. Proper drainage prevents ph spikes but they happen in flower for me regardless.
Addition:Make sure you have iron. Nitrogen and mag are needed for leaf development. Ph of the soil most likely needs to drop. Ph meter for better accuracy.
Addition:Make sure you have iron. Nitrogen and mag are needed for leaf development. Ph of the soil most likely needs to drop. Ph meter for better accuracy.