hey there budcrack hard to input based on a plan, but what i can see straight away is that you're not optimal on your vapour pressure deficit, VPD. VPD basically regulates the metabolism of the plant and if you want to optimise your grow time especially veg time, you'll want to tune that in. what you want to do right away is to get the humidity up and temperature about 1°C lower by using a dome, or a PET bottle cut in half over each of the seedlings to keep the moisture in. i see you're using coco nutrients and bloom boosters on day one... why? dont do that bro, you're gonna stress or maybe even kill these seedlings like that. Right now what you want to be doing is promoting ROOT growth, how ? kelp extract and micronutrients... combine them in a foliar spray spray once every 2 or 3 days until dripping wet for the first four weeks or so. that will help keeping the humidity up at least a bit as well. you're already using vitalize, which can be part of that spray... I see you got those LEDs and spectrums tuned in real nice : warm white is perfect, you got it ! a few last things ... your lamp to plant distance should be no more than 12 inches, currently you're at 17+ dial that in otherwise your plants will stretch all wrong. 7 PH is actually way too high ! what's the PH of rain water? 5.5 why is that important ? different nutrients get absorbed at different PHs, you want to lower the PH to at least 6 or even 5.8 if you can. i know it's a lot, but that's my best advice ! hope this helps ! 🚀