Those "leaves" are supposed to wither and fall off. They are the codyledons which aren't really true leaves. Later, the ones above it will eventually turn yellow, wither, and fall off because the plant won't need them anymore.
Actually the codyledons had already left I am meaning the next leaves to form afterward they actually turned yellow and dry on the edges first and then blotches of yellow formed in spots that quickly turned brown and necrotic some becoming a hole . Now that I started adding calmax by grotek all the edges that were yellowing and drying up have now stopped drying the color is returning and the edges are basically looking like damaged leaves that have healed and the blotches on the middle of the leaf now looks like a yellowish scar. Before the problem I was using Ro water Gh flora 3 part ,with molasses every other watering, and superthrive in every watering and the problem just progressing by adding Grotek Calmax 2-0-0 1.5%cal .75% mag .1% iron and the plants are improving it does have extra nitrogen so possible I was lacking nitrogen but they taking off like crazy but of course the damage they already took will not be fully repaired but other then my important plants in the past 3 days my damage cherry tomatoes have showed improvment started growing again and are producing flowers so I think calmag was the answer.