Rainbow Chip Exotic Genetix

Day 50 - Supercropped one that it appears I unsuccessfully fimmed both times. Probed soil and it's still a bit damp so no water today. Day 51 - Split 2 gallons of water/nutes between the 9. I need to get the 2nd light ordered so I can open up the tent and spread these out. The 2 in the back left are growing like a tree instead of a bush which makes me think they are the Lime OG, but I'm not 100% sure. Im thinking I mixed up my labels when I transplanted. Day 55 - Growth is still good. I did notice a few leaves with rust like spots appearing. Can anyone help identify what this is? Would some calmag help or does is it look like a fungus/disease? Hi guys, I'm hoping I can get some more help on my grow. I noticed these rust looking marking on some leaves. It's not spotting but more of patches. I have been using the general organics line and just got feeding up to 100% of their recommended dosage. I have a flower tent next to my veg tent. I started to add co2 to my flower tent 10 days ago and I was exhausting the air from my flower tent into my veg tent. It helps keep temps up in my veg tent and allowed me to supplement both with co2 pretty easily. At night time, I exhaust both tents passively with no c02. These spots are appearing primarily on the plants which are right below where the exhaust comes in from the flower tent. Are these spots from a deficiency or are they from a disease/fungus caused by the environment I created? I did run out of co2 the other day and I am waiting for more. Meanwhile I am still exhausting the flower tent into the veg tent during the day time. Could this be causing the problem?