Second Grow: Organic + AutoPot

This is my second grow, first time in AutoPot. I will try to LST + one topping as previously only done LST and were happy with the results. The medium is BioBizz Light Mix mixed by me with perlite and clay pebbles so it will be 50/50 ratio soil to rest of ingredients. I did this time "Just add water" strategy as with my previous grow I suspect Orgatrex of burning my plants (nitrogen burn was in 2nd or 3rd week). So I have skipped it and added startrex + soil flush at the beginning, then bactrex with 1l water to each pot and mycotrex for the hole that I threw the seed into. Lamps were on so the seedling would know where's the sun ;-) I have planted two seeds in coco coir in the target AutoPot as I can't be bothered and this style works for me. I have 100% germination rate with that. I constantly measure the conditions of the soil. AutoPot is not turned on yet, as there is not enough roots to support it. I moisten the medium with water spray once a day but sensors say it's 40% moist so it's in the middle of what should be. I already see that - correct me if I'm wrong - i got two different pheno types, one is thinner with longer leaves and second has fatter leaves and is a bit bigger. Wonder if that will result in different outcomes for flo time ;-) this time I planted two of the same so I don't have to find ways to dry the lady that gets first. I know I should humidify, etc - but I really believe they will do just fine. I am curious tho on your possible comments regarding the difference with shapes and looks of these two plants from the same strain.