First time variety

Started to notice some weird rust/ necrotic spots appearing on the older gold leaf. I started giving her low dose seedling recommended feeding and have been routinely checking the ph with the test strips. I decided to order a digital ph meter and found that the ph of my solution was a lot closer to 8 than 6. 😩. I started using the digital meter and ph’ing the water to 6.2. The younger gold leaf got transplanted into a 5 gal bucket. The white widow auto is growing with some weird growth and also purpling inside the new growth. Seems like it’s ph related. Hopefully my new meter helps.