Naptown/Alien Zkittles

Week 1 went ok, both seeds successfully germinated and sprouted. My Alien Zkittles seems to be off to a great start. The stalk got a little flimsy so I had to prop it up on a stick. Not really sure what’s going on with my Naptown, it really hasn’t grown at all since sprouting. On day 2 it had turned darker green and gotten flimsy but on day 3 it stiffened back up and went back to the normal shade of green but has barely grown in height at all. I used ProMix HP with no nutes and straight RO water so not sure how I could’ve stunted it. I’m gonna give it a few more days and see what it does maybe pull it and pop a fresh seed and start over we’ll see.