my first grow

Week5, some of the plants looked like they suffered from either to much heat or too much water. I stopped watering for 3 days, but it did not change anything, in fact they seem to enjoy some water when they finally had some. So I have opned up the room and put in some more airflow. this lowered the temp 3 degrees, and still the RH is around 45-50% so this should be good. I did a FIMing on one HA, just to see how it will turn out. it was taken on the 4th node. Hight is a bit hard to measure as I also did a LST, but it seem to have grown 5 cm since last picture AH. Day 34, added some more LST on the AH. I still think they are a bit small, but properly because of the first week of no Nutrition in coco. I will need to learn from this in the future. The coco was not buffed or prepared properly as well. Still no sign of pistils, but I see in other diaries this will show around day 38. I was always careful not over watering, but was really left with no experience here. many different approaches on the subject, and I've also notes some brown spots on one of the Fat bananas. I concluded it was due to nutrition deficiency, and maybe I was feeding and perhaps under watering a bit. So I have decided to try watering with a Garden Sprayer Air Pressure to distribute the feeding more slow and evenly over all the surface. I will add more water, but only every 2nd day, and perhaps throw in a complete flush every now and then. this feeding schedule will also produce some runoff, which I will be testing next week when my new TDS meter will arrive. Until now the runoff is 6.5 PH so this is good. I have notice that my nutrition/Water beholder has changed the PH and lowered it over a few days. Perhaps due to the root explosion added in there(with a bit of sugar), as these are living micros feeding of the sugar, and multiplying in there. So I will be measuring the PH every time before feeding the plants