Twisting at nodes

At 74F 60rh% is good for daytime but the temp drop is taking that 60rh% and making it a instant 70% overnight. Vpd is great for transpirational daytime pull but there is no transpiration at night. Vpd 10x less effective at night. Your plant looks good she is just a little heavy with water, looks like she is taking up faster than she is able to release moisture. Internal leaf surface is barely scratching 70F. ( very low transpiration) (low flow of moisture) In order to optimize photosynthesis and speed up transpiration a little you want to get her closer 80F, and at nights try and keep rh to 50-55 encouraging a little evaporation and allowing the plant to spit moisture freely all night and take the entire responsibility/workload of moisture removal off transpiration and combine it with evaporation. ET, evapotranspiration is the combined total of both over a given period. Having a plant cycle day and night at 65+% will always lead to problems however slowly they creep in. You are watering every 3 days and by sounds of it there is still water in the medium just chilling 😎 and your adding more. Plant water flow (transpiration) and a car's gears isn't direct correlation, but both involve rate, pressure, and resistance, where plant xylem acts like narrow pipes (gears/tubes) driven by evaporation (pressure) to move water (fluid) against gravity, similar to how engine pressure drives fuel through lines, with narrower tubes/gears meaning slower flow/higher pressure for a given volume, just as a plant's tiny vessels control water speed and total volume. Plants use negative pressure to pull water through narrow xylem; cars use pumps to push fluid through lines. The rate (how much fluid) and velocity (how fast) are linked by the size of the "pipe," much like gears change speed and force in a machine. Absolutely nothing wrong your plant is beautiful and healthy. She is uptaking well but not able to release as fast as she wants to. Adequate air flow around leaves helps to strip away the humid "boundary layer" of air, a process crucial for the plant's respiratory functions like transpiration and gas exchang. 24/7 airflow is essential but make sure not to stress, the line is thin.

The tips are going lighter, before browning off. So to much npk.. Hold back on that a bit and I think your pH is out.ph Test the run off. Someone will advice you on that I have never done it..