One of my girls is yellowing VERY BADLY!

[leglesscrow]

I bet the PH on the other girl is not that bad, But could get close soon.

What is the PH ?

It doesn't look like nute burn. Looks like nute lockout.

This reminds me of my days as a learning resident.
Does it hurt when I do this ?
Let me see your roots and cough. LOL

No really, how's the temp of the water and what do the roots look like ?

The roots on the healthy one seem to be long and strong! On the girl thats sick they seem to be slightly withdrawn, by that I mean they are not nearly as long as that of the healthy one, but there are alot of them. As far as my pH, Im using the liquid test kit (the one you drop the stuff in and it changes colors) and ive tried to keep it as close to around 5.8 as I can judge by the color comparison. Its a yellow orange but a little more on the yellow side. (Yellow being 6 and orange being 5).