Pretty sure i know the problem but want to be sure

4x2x4 tent, (2) 150w hps (2) 85w cfls (2) 4" inline fans (2) 6" inline fans, 6" clip on fan, large oscilating fan. , mostly 1 gallon smart pots and general hydroponics nutes.

so the 2 plants that have close ups are about 3 weeks old and i just gave them nutes for the first time 3 days ago. i gave them some Bio Thrive and Camg. One of them looks like it got a little bit worse. Should i continue gradually bringing up the amount im giving them or do they need something else all together. the other picture is of 2 plants ive had for several months and completely fucked them up but one is still holding on and it was starting to come back. any ideas? i tried a different soil with the 2 new ones and its working out much better. the "just right" soil wasn't working too well with me so i switched to fox farm.

You are feeding too much too soon. See those downward clawed leaf tips? That is your plant telling you it is overfed. I can only see a couple of them in your picture so maybe not severe. Those claws do not go away so you have to evaluate what your new leaves are doing now.