Ok. It‘s been a rough week. Adjusted pretty much everything as my BK-plant was showing strong spotting.
Here‘s what I did last week:
1. flushed plants and fed CalMag and general nutes (bio)
2. cut off damaged leaves
3. increased temperature
4. lowered fan to improve soil ventilation
5. increased distance to light source
6. took 5 days watering hiatus
Let‘s hope for the best.