Too Much or Not Enough?

I'm having multiple problems. My plants are 2 weeks old and showing different problems, in the same plant. some have 1,2,3or all 4 of these issues. im using a mixture of equal parts black magic and a seed starter soil with perlite and vermiculite. Big Bud and NY Diesel under 600w mh. Good temp, using distilled water.Havent checked ph, will buy meter in morning. no nutes yet. Some show dead brown areas maybe nute burn, folding taco leaves, rust spots and light green areas(possible nitrogen diff?) some plants look fine. 2 different strains, but the same strain in one pot will be fine while the other is not. Don't know if soil is too hot or needs nutes. Any ideas?

let them dry out more before watering. they are stressed. too much water, methinks. is that black magic a "hot" soil?

hey bro just like the boston they look like a fine breed.. there looking very nice like the above let them dry out more so roots can get the 02 it needs before you ad any nutes.. looks like the spots are from the splashing of your feedings. seedlings are just like a new born baby if you watch and listen your babies will tell you what you need... KEEP ON GROWIN.........