Quote Originally Posted by Rusty Trichome
I'm not. Tiz why I asked those specific questions. :thumbsup:
Soil probes are notoriously inaccurate, likely your soil is buffered fine, and if your ingoing (plain) water is 6.5ish, that's fine too.

Yellowing with brown starting at tips and progressing twords the petiole (leaf stem) is overwatering or a drainage issue.

Yellowing and dying-off of fans is either insufficient light or a natural aging of the maturing plant's fan leaves as the plant 'borrows' it's nutrients and such.

Yellowing with blotches is usually a calcium deficiency. In your case, this is the likely issue, as different plants have different calcium needs and tollerances. Add it to the water per instructions.
Old leaves are old news, so don't expect to see leaves miraculously recover. But the other parts of the plant should show improvement after a couple of applications.
Rusty- Thank you so much for your help. So far, I agree that it is most likely a calcium deficiency. I've given it an initial dose of Cal-Mag, but how long do I continue giving it? I will keep everyone updated and I will get some more pics up.. Hopefully others can learn from this post!

Happy Growing :thumbsup: