Looks Good to me bro! Nice and even. I see the pic with all your equipment in there I'll give you a simple hill folk life hack I use for CO2 generation. Fermentation. There's several ways to do it but IMO there's 2 great ways. The first is put a 5 gallon bucket with 10 pounds of sugar and fill with water and add yeast. You can also make beer wine shine etc while you do this trick. The second way is to use a carboy, a glass or plastic water jug basically, with an air lock on it. The carboy is actually a purer way to do it as nothing taints the booze and no funky shit goes from the booze to the plants. Just good clean CO2. You'd be amazed at how well it produces and improves your plants. Initial cost for the first time is under $100 buck the go buy a 10 pound bag of sugar and some yeast or hell just pour unfiltered beer in it and drink the rest of the beer. You can get about 2 months worth of active fermentation out of one batch even longer if you slowly add more sugar to it. Keep it in your tent and it'll pump serious CO2 into the room at first and as it goes it'll fade off, ideally if done right and kept going your booze will finish at the same time as your harvest.
