Geting yellow in start (Royal Dwarf and Royal crematic)

[terror4]

I have repot them all but i think only the 2 royal dwarf will survive!!!!

ph just 7.2 to 7.8 and i must fix it.Lemon can help me a bit?

 

[terror4]

Hello again my girls get 28 days old.His grow slow.I dont have use nutes till now(have biobizz grow/blom/top max).And i have add one more royal dwarf at day 7!!!

my lights now is 5 x 23w 2700 and 2x 40w 6400.Soon i add 2 x 23w 6400 and 1 x 23w 2700.Tolal 161watt 2700k and 103watt 6400k.

Also have 2 fan 80mm get out the heat and one 120mm for resycle air.

Here some foto any advise are welcome.The first two sets of leafs are still ill!!!!

and the new one....