Thanks mateEnjoy your beautiful harvest!
With organic soil, nutes already in the soil the amount of nutes drawn is very correlated to vpd, as a user its hard to adjust and you just have to hope the plant and the organic beasties do their job. I prefer hydro with leds, you know whats going and and can adjust. But each one to their own.You need to drastically reduce the amount you're feeding them. It looks like soil. What have you been feeding them? I see what looks like top dressing in the early pic.
I was thinking about that but I think this idea would be more suitable for a slightly bigger tent where water vapor could spread more even. There is always a risk of mold with wet towels and stuff like that if you overdone it - I remember that there was someone who had this kind of problem after keeping towels wet for a long time.Good luck with your new run!
A cheap and effective way to raise the humidity in a small space is to hang a piece of cotton/kitchen towel on a string with the towel sucking up water from the water reservoir.
With air ventilation the water will evaporate faster than just the glasses you're using right now. Hope my description makes sense.
Thanks for the info CREE cobs are expensive. Especially when you import them to my country. Not sure if would need to do that though. It's not that I'm planning to get a bigger tent - for now at least. I was already thinking about replacing cobs with a 150W led lamp in the future - if I would squeeze it inside I mean: it would fit inside the tent for sure, but maybe it would have to hang a little bit lower because of the carbon filter. My cobs got one huge advantage: they are compact so they can hang on the same height as the filterIf you need to restock on cxbs or new cree cmu cobs i believe they are on offer on arrow electronics right now. Not sure what spectrums but very cheap, last time i looked was a handfull of dollars each.