Beginner Grow: Cookies Gelato

This week so far has been a week of faffing. First I noticed that the soil outside the damp core was very dry, so I decided now was the time to sort out the drip feeder to have a better spread throughout the pot. To this end I increased the number of drip prongs per plant to 3. This is setup in a "Load Balancer" style (so 1 pipe, to 3 pipes, to 9 pipes), rather than a manifold so, shouldn't increase the amount of water only the distribution. Decided now was the time to give them their first feeding, I think they are out of seedling into veg now, all their leaves look like cannabis leaves now. Minor disaster when I chucked the flowering tablet in the water and had to chuck it for the veg tablet. Now I have done it, this feels like it was a bit too early, but and perhaps I could have stood to wait for couple of days, but it's done now, and no one looks worse for wear. The air seems low on humidity and I am not sure what the cause of this is, are the plants soil too try? Misting the air helps, but only briefly. After a bit of a hunt the humidifiers online seem a bit meh, I can't see many models that let you set the % you want without them being millions of quid. On the other hand this does give me an excuse to make my own cold water mister! I got a Amphibian terrerium plug which detects humidity, and plugged a ultrasonic mister for fountains. Looks a bit janky compared to everything else, maybe I will 3d print a better container for it. After reviewing the ideal % it turns out that the mister wasn't needed at all. 🤦‍♀️ Oh well, it was a fun project. I also am not really sure what I am doing with the water, but I overwatered them a bit the day I fed them and there was some water in the drip tray the next day, about half a cm on one of them and less on the others. Chucked that out, and the plants don't look unhealthy. I will get a soil water meter to make a more informed decision about the watering in the future I think. The positive of overwatering is that the soil is generally looking a lot more healthy, and less super dry outside the core, I will pause the drip for a day or so to make sure we get a bit of air in there, and if it's dry-er I will restart it again. I think it as a good shout faffing with the water drip prong thingies. I should probably try to move the circulation fan to above the mister, so all the plants get blown a bit, I think the one under the fan doesn't get so much. I have no idea what I am doing