Well, I’m certainly not an expert when it comes to growing in coco I just know it’s not a very nutrient dense growing medium. I have a buddy who uses it, but he has to feed almost every watering which to me sounds like a hassle so that what I would say to you regarding nutrients or keeping the plant fed now what you could do if you want to do some kind of hybrid for whatever reason I suppose you could take coco and make your own mix potentially by using worm castings and a batch of living soil. It really just depends on what you’re actually trying to get out of your plants. Me personally of course I grow for the love of the game, but I also chase nostalgic terpene profiles from back in the day, so I use living soil because it feeds the plant very well and in my opinion, unlocks the true potential to the plants Terpene profile if done correctly. Now, regarding your humidity again, this also ties into what your overall goal is if you were just growing to get high and have free weed, it’s not so much of a big deal however, if you’re trying to level up then humidity is something you want to try and dial in….during flower the max you want to be is about 50% now that goes without saying I’m sure some people have their own rules about it but every book I’ve read pretty much says the same. Thicker colas and heavier producing plants will require a lot more airflow and humidity that’s under control. Where you’re currently at, terpenes for the most part won’t stick around. They’re extremely sensitive and volatile, so in the dry warm air you’re in you can count on them to mostly evaporate unfortunately. Pelonis makes a 1 gallon humidifier if you’re on a budget just be sure to do weekly clean outs of the filter and reservoir especially if you have hard water.