It’s almost impossible to tell different strains from plant pictures. Even if one is 100% indica and the other sativa, it can still be a real challenge sometimes. Best thing to do is just take care of them best you can lol. Sorry i know this really doesn’t help, but most answers will be similar. Also, I HIGHLY recommend replacing those clear lines with black. Algea builds up pretty quick in them due to light exposure.
@Cfpdadto3 lol good luck with that. Like people have mentioned its near impossible unless you know they have different terpine profiles, flowering traits, colors during flower, etc. I did the same shit last grow with some Skunk Hero, and End Game. By the end of the grow i figured it out but it wasnt directly through Terpines. Because one would think something named Skunk Hero would be Skunky when you smell it. But its anything but skunky and tastes like citrus and berries until you exhale. And is plastered in red hairs reminiscent of old school skunk. While the other plant was purple/chocolate in color and tastes like skittles with a skunky exhale.
I agree, at this point it’ll be almost impossible to find out. Even the same strain can take on a different appearance based on environmental conditions. I grew c99 from clone, the outside plant took on a sative like appearance with skinny leaves, while indoor looked like an Indica plant.