Indoor Probably pH....

[Janxster]

I have this 7 week old cheese auto that I gave a feeding to that was low pH like 5.2 maybe.. In trying to figure out what went wrong I think my pH meter is screwy and even my base water is low. now i cant tell because i cant even re-calibrate it. She is very bright green. She has been bright green since week 3 but it was just newer leaves so I thought it might be the strain. But in week 5 I gave her the very low pH water from a compost tea with too much fungal not enough bacteria because the air pump stopped working at some point during the evening. The pics are a week later and shows her starting to recover.

AFN link
temp - 72F-83F
RH: 45%-60%
Medium: DIY Soil 45/45/10 compost/coir/vermiculite
Light: Marsydro TS1000 (150W)

So aside from fixing my water pH Is there anything else I can do to speed her recovery?
The purple streaks seem like it could be sulfur what do you think?

 

[namvet25]

Purple stems are normal in some strains and will not hurt the plant.You should start feeding bloom nutes along with cal/mag at this point and make sure your ph is correct.