My clones need help !

My clones are from a local club and I took them from whatever set up they were in at the club & transferred the rockwool cube'd clones to soil outdoors . Leaves are turning yellow & some at the bottom are curling , could this be new root growth ? Or did I fertilize to early/much ?

Well clones don't need to be fertilized, so you may have burnt them, but leaves will also yellow and sometimes curl when growing roots, so really we would need to see some pics to know either way

Thanks for the reply , i'll try to post a picture of my female Alien OG clone . If you look at the upper leaves & bottom you can seee curling & yellowing