day 22......add nutes!!!!!!!!! its been 3 weeks!

I think right now your overall problem is you haven't added any nutes yet. you have a decent sized plant already and its probably sucked up all the nutes in the soil......
add nutes with more Nitrogen than P or K.....

now I may be jumping to conclusions but by the looks of the slightly raised edges on the frills that your plants may be suffering from lack of water/too much heat.........but its hard to tell