This is my Auto Northern Lights. She is already strange. All research points towards an iron deficiency. Hopefully someone can confirm for me or correct me.
PH between 6.4 and 6.6
Remo Nutrients feeding every 2-3 days as needed
Day 9 of flower
T5LED with Agro Bloom bulbs sitting 30" away at 20/4
Sunshine Mix 4
RH 45-50%
Is the best/only solution a flush in this instance? I will probably have to change my PH on this plant alone as the other 3 look perfectly fine. Should I increase or decrease PH?
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Causes: Soil pH outside of 6.0-6.5. Also, a high level of phosphorus and some other nutrients can cause cannabis plants to become deficient in iron. Another cause of iron deficiency is stress. Fluctuating temperature, too much time in darkness, and pruning the plant excessively can cause stress and ultimately iron deficiency. The temperature in the grow room being too low and fluctuating often impacts the root system and weakens it which can also cause this problem. Also, bad drainage and overwatering of the plant can also affect the iron level in cannabis plants.