Two of These Plants are Not Like the Others

[GreenMtnHigh]

New grower and first post here. First, a little about my current grow: 5 week old ILGM Zkittlez fem., 2 Mars Hydro TS1000 set at 36” from the canopy at about 35% power. Fox Farm Ocean Forest with low dose cal mag with each watering. No nutrients yet.
My question is in regards to the plants in the upper right and lower left corners. Those 2 plants are considerably smaller than the others, even the leaf shape is different. Could this actually be 2 different strains? Bad genetics? All plants are healthy and happy. Any information or opinions are welcomed! Thanks!

 

[mysticepipedon]

It COULD be another strain, but it's probably two different phenos of the same strain.

 

[GreenMtnHigh]

It COULD be another strain, but it's probably two different phenos of the same strain.

That isn’t something I would have thought of. Thanks for the input! I’ll add it to my list of things to study!

 

[detroitjoe]

maybe it identifies as something else