Something wrong

I hope you well mate but its not looking good isit and with all the equipment and co2 you would think they would just grow.. nope. You still need the basics get that right and improve from there. To many problems to sort out. Like I said in your last question your going to struggle wirh that many plants while not knowing how to grow. Shame for the plants.

you said "I use co2 enrichment" How are you monitoring that and what are your numbers? What are you using to enrich it? As I see a standard tent and carbon filter w/ extractor fan. If you are venting out the CO2 its doing nothing. it need to be in a sealed environment. The best way I seen to do CO2 is using pure co2 in a gas canister and getting a digital controller to adjust the PPM to the desired level. You then treat the enviroment as a sealed room to make temps and RH on point, no venting out or if you do, its outside not into your living enviroment, extra CO2 can be problematic in your living quarters. However the exhale bags and other options like sugar and yeast are a lot of work for little to no/short boost in CO2. CO2 is the last thing you do in a grow once everything else is locked in and near perfect. IMO I'd say your lights are to strong and close to the plants. The other things I think will even themselves out once that is fixed, they won't repair but should stop progressing.

It looks like you’re running a drip irrigation. I’m not sure what the tubes going to every plant are. If so there is your problem. Or if that is your watering solution/method it needs tweaking. Your plants obviously want to grow, they look good enough, but the soil looks extremely dry, pulling away from the edges as well. Whatever correction you do, PH, lights, etc., give your plants a couple of days to respond. Constantly correcting will not make things better. Have patience. Every seed is like its own pheno type, the only way around it is to grow clones. If you’re growing the same variety it would be something to consider.

Without a diary it's going to be hard to nail down your exact problem. Looking at the pictures I'm seeing different problems on different plants, I can see one that looks like a magnesium problem, some that look like they have to much nitrogen and some that didn't have enough nitrogen. This could all be down to watering practices. If its soil your growing in then keep the Ph between 6.0 and 6.5. Water until you start to get runoff, let the soil dry out quite a bit before next watering. Keeping many plants happy can be hard work as some may need more nutrition then others or require a slightly different ratio of Nutrients to others, even if they are all the same strain they will react differently to each other.