Help me diagnose

[Taktookato]

Transplanted the ladies into 3 gallons.
The ppm is to 800-850.
The ph is 6.4
Been watering with ro water the whole time. And the plants look really healthy.
Been in flowering for 12 days now ( 12:12 cycle.
Yesterday I noticed some yellowing on the tips of the upper leaves.
Is it normal. And if not what’s the reason. I’m so happy the plants are healthy. Don’t wanna ruin it
The yellowing on the tips of the top leaves is what worries me.

 

[Kevinkellog]

How many times have you watered with your nutrients in a row? Or is this just
From the recent transplant

 

[Dirtbag]

Overfeeding. Test your runoff ppm and if it's over 1000 you will want to feed plain water until it's coming out of the pot under 900ppm or so. Ideally with some calcium in it, not plain RO.

You didnt mention what media you're in or the fert type.

 

[Kevinkellog]

Check runoff, Flush with ph water get the medium to 5.5-6.5 adjusting the water accordingly. Finish with 5-10 gallons of light nute 5.5-6.0ph

 

[Taktookato]

How many times have you watered with your nutrients in a row? Or is this just
From the recent transplant

First time after transplant. I took ppm last time I watered it was 850

 

[Kevinkellog]

Soil is hot. Wanna rum clear through it a LOT.