Been trying to research and learn things on my own, but this issue seems to be getting lot worse. I think I have a nutrient deficiency but don’t want to overfeed so looking for advise from you all since this is my first ever grow. It started slowly about 3 weeks ago and has progressively gotten worse working it’s way up the plant on the fan leaves.
All ticket info below…65 days from sprout and about 4 weeks into flower (autoflower). It looks like Nitrogen deficiency but would that happen this late in flower? Maybe Potassium deficiency? The top leaves are also turning purple and my other Amnesia Auto is not. My PH has always been spot on.
Note, I’m using RO water and had previously been feeding 5ml of CalMag every watering so I’m going to cut that back (maybe its blocking out other nuts?). Been feeding plant 5ml of Tiger bloom starting about 3 weeks ago and feed about every other watering to try keeping PPM’s between 1,000 and 1,500. Should I add some Grow Big to up the Nitrogen? Or should I try like 7.5ml of tiger bloom which would be 3/4 of the recommended amount per the FF feeding chart?
Amnesia Haze Auto from IloveGM
Method: Fox Farm Ocean Forest Soil
Vessels: 5 Gallon fabric pot
PH of Reverse Osmosis water going in is 6.6/ Run off = 6.5 to 6.7
run off PPM/TDS = 767
Indoor = 4x4 grow tent in garage
Light system = 2 ES 300 LED’s at 100%
Temps; Day = 70F; Night = 65F
Humidity; Day = 53%, Night 45%
Ventilation system; 6" Cloudline exahust fan + 12" oscillating fan on wall
deHumidifier = set to 45%
Co2 = No
This is OLD PIC from 2/28 when problems first started.