Plant issues

Wondering if I can get some advice on these plants. These leafs are looking dry and turning kinda red and it seems to get worse daily. The soul is Mother Earth (they were out of fox farms when I went) I follow tangs feeding schedule using the ph perfect sensi and cal mag. This is week three and the plants are Dutch passion critical orange punch auto. Maybe not enough phosphorus? Too much cal mag? I flushed them out yesterday hoping it will help. But it actually made it worse. The first pics are yesterday the second are today