Is this ph problem

Why assume it's pH related?

What's the pH of the input?
What's the pH of the runoff?

Leaf doesn't look like typical pH symptoms
Ph 6.5 input 6.5
Three feeds ago output 7.3
Thought ph from what I read and I had to re cal my ph pen before last feed.
Plant looks beautiful otherwise. 8 week old auto
 
Is this the start of something I'm thinking maybe ph any feed back appreciated.
pH can cause micronutrient uptake problems, calcium, magnesium, iron, ect. Which appears to be your problem, that said, it could just be a lack of nutrients in the medium. Also temperature can cause nutrients to not be absorbed properly, as well as too much/too little water.
As you can see there could be multiple possible causes for your problem but without knowing your grow intimately it's hard to say.
 
pH can cause micronutrient uptake problems, calcium, magnesium, iron, ect. Which appears to be your problem, that said, it could just be a lack of nutrients in the medium. Also temperature can cause nutrients to not be absorbed properly, as well as too much/too little water.
As you can see there could be multiple possible causes for your problem but without knowing your grow intimately it's hard to say.
I have been starving it a bit ill be a little kinder lol
And watch
I would try some CAL-MAG and see if it straightens out! Go light! Can always add more I would assume Calcium or Mag Deficiency!
I have been light on feedings ill be a bit more kind lol
Week 8 auto
 

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What does the whole plant look like? Take a picture with everything in one shot
beautiful 8 week old auto sticky as he'll.
Did just find a little cat in the in between a bud and the stem.
 

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