I run soil and try to pH everything as close to 6.5 as I can. With your pH that high, you could be locking out nutes and seeing defs. You didn't mention how old your plants are, whether veg or flowering, and what your feed schedule has been to this point. All this would be helpful to know.
With no more info to go on...I guess if they were mine, I'd be most concerned about keeping the pH lowered. I'd probably hit them with some 6.3 water with a TBSP of blackstrap molassis (unsulphered) and a guano tea. FF Big Bloom as a stand-alone added to the molassis would work fine. See how they respond to that and then I'd resume a normal feed schedule keeping it pH'd to 6.5.
The molassis will act as a chelating agent to help the plant take up the nutes that are probably there, but locked out. It will also give some energy, feed your benes and provide some other benefits as well. The guano will gently feed the plant and help bring the soil back into balance, while being very soothing on your plant at the same time.
Also..if you're not running a regular cal/mag supplement, you probably should be.
Hope this helps,
Max :wacky:
