so i think i may have some yellow leaf's but dont know for sure.. maybe i am just paranoid..
dont think i have been overwatering, got this meter that reads soil moisture and i water when it's close to dry.. not all the way dry, but close. top of soil is crunchy...
i watered about 4 times in their 2 weeks of life.. everytime they got couple drops of superthrive, and this later water i gave them some alaska fish emulsion ( 5-1-1 ).. this is the only thing i could think would cause this..
ph level of each plant is anywhere between 6 and 7, so that should be ok..
light schedul 24/0
10 hrs of MH about 4.5 ft above them, and then
14 hrs of floros..
all plants have different types of soils.. but based all soils on N>P>K..
any thoughts??

pic 1 and 2 are different plants..
pic 1 is the one i think may have some yellow leaf's coming on ( she's my biggest ) and i just want to stop that before it happens..
pic 1 is the middle one on the 4th pic...

any advise would be incredibly and greatly appreciated.. i just want to stop before it gets bad...

could hot temperature cause this??? cause that definately is a factor..
it does get hot at times...

thanks!