iced grapefruit yellow 5 weeks in blom.

[mannhilld]

Hi!
hello friend my girl is not feeling well five weeks in bloom now.
setup:
120 * 120 * 200 cm budbox
600 w hps coultube
budboster CO2
77 F / 25 C and Huminity 40- 55%
18 liter pots whit soil
ventilation is super!
Two weeks back, the pH value between each 5.4-5,9. so I flusha her the two last few weeks pH rais to 6.9, and now today's runoff 6.5. I also gave her NPK 2-4-6 and additional and Calsium. ec on the water 1.3 nutrition. Is something missing WHO and its not magnesium ore Calsium. ph is fixed and its gets worse. Dont now what to do feeling stressed now Its my last girl after 3 was watring whit water from river worst thing to do I learn Budrott on two of them and some root problems on nr3. Can it be sulfur ore is it just a nitrogen problem who take time to recovering? thanks for help guys!!

 

[mannhilld]

Update after one week cal-mag and nutrient for blom given 3 days ago ph god but lady still losing leaf budds grow but slow.

https://www.icmag.com/ic/picture.php?albumid=68408&pictureid=1628888

 

[mannhilld]

mid=68408&pictureid=1628885[/IMG]

 

[mannhilld]

 

[ChasingGreen]

You just need to up your nitrogen next time going into stretch (or it could have just locked out from the ph and you had enough). Add some more next time a little longer into stretch to have her last through flower. It's normal to start seeing yellowing in week 5 though, but that's a bit much.