Calatheaanswered grow question 4 years ago Hey I had similar symptoms in my white widow grow in week 9 and I got it fixed.
I believe your girl is suffering from a combination of:
- light burn (drooping leaves, only leaves closest to the lights are affected, yellow or burned tips)
AND
- Nitrogen deficiency
-> leaves of the whole plant are looking rather pale green than dark green
-> older growth is affected first (because nitrogen is mobile so it travels from older to newer growth leaving the older leaves with the deficiency)
AND / OR
- Potassium deficiency
-> your girl requires a higher amount of potassium in flowering stage for bud development so there is a chance that the yellowing leaves are being caused by a potassium deficiency
I would recommend to:
- raise the grow lights
- increase the amount of nitrogen that you are feeding your plant
- increase potassium
This is how I had treated my girl and she was cured after 5 days
Also check the ph of your feedings as this could lead to locked up nutrients and therefore to deficiencies
Hope this helps
happy growing