First Organic Auto Grow 50x100cm 6 Plant

This is the most recent development as of today, but i will report more often in the next few weeks. Frosted Guava No 1 still has those necrosis spots and a relatively droopy look, CalMag didnt do the trick for her. Ill keep it in the feeding schdeule for now. Suggestions welcome!!! :) Had to supercrop once again as some ladies went on a skyrocketing trip LOL. Should have matched the cultivars better, regarding their growing time and height. I try to keep VPD in the 1.0-1.2 kPa range for the rest of the grow. I manage it with a home built automation system, which lets me set a target VPD and regulates my humidifier. Temperature is managed solely by the integrated temp control which comes with my PrimaKlima 125 EC-TC. The humidifier (cheap pond fogger plus 24v fan in a box) reacts dynamically to the temperature measured by several wireless sensors in the tent and tries to reach and hold ideal values. Unfortunatly, Im still victim to wet weather and cannot really react to phases of high environmental humidity. Thought about getting a dehumidifier, but I dont want to waste so much energy. Since growing in soil I didnt mess with checking pH and EC at all until now, but seeing those necrosis spots and weird coloring of Frosted Guava No 1 despite everything I tried so far, I ordered a cheap chinese pH/EC/TDS-meter and test stripes for cross checking pH at least. Also Ill introduce BioBizz AlgAMic into my nutrient mix as its advertised as being beneficial in case of overfeeding or deficiencies and I made quite good progress with their other products. Thought Ill give it a try with both new helpers, learning is everything! Both will arrive some time next week though, so a little more patience is needed. For now, Ill reduce the amount of water for Frosted Guava No. 1 as I suspect root issues. Just want to see how she reacts