- lights dimmed at 60%
- at the start of week 3, the leaves started to droop slightly
- signs of phosphorous deficiency start to show at lowest leaves
- bought more accurate pH tests and found that pH of water was still ~7.5 after adjustments (tap water here is rich in carbonates, pH 8)
- flushed plant with pH 6-6.5 water (adjusted with ~ 1.5 mM citric acid) that had half a dose of inorganic fertilizer NPK 11-14-17 to supply some phosphorous until runoff was pH 7
- plant already looked less droopy next day
- 2 days later it grows faster again and leaves are pointing up
- some small signs of nutrient burn showing 4 days later, watered with pH 6.5 water, nutrient burn did not