Zkittlez autoflower - First Grow

11/22 - 11/28 Early in the week, I was concerned about stunted growth as my seedlings remained in the cotyledon phase for a period of about 4 days. I had two hypotheses for the lack of growth in my seedlings: Hypothesis #1: Inconsistent environmental conditions Temperature and humidity fluctuated during the first week of germination. Humidity ranged from 27% to 94% but stayed within a general band of 50-80%. Temperature was a bit more consistent with min and max temps at 66 and 84 degrees but stayed in a general band of 70 to 82. I had trouble moderating the temperature and humidity within my grow tent while the ventilation fan was running. I opted to suspend use of the ventilation fan, introduce an oscillating fan, move the lights up and opening the intake vents. Once I took these actions, the temperature and humidity managed to remain consistent for both my bonsais and my regular grow. Hypothesis #2: Seedlings weren't getting enough nutrients The approach I've been following most closely is Mr. Grow It. I'm using Fox Farm Ocean Forest and my understanding is that this soil has enough nutrients to feed my plan until day 20-30, so perhaps this wasn't the culprit for slow growth. My next thought is that it must be either a water issue or a nutrient update issue. To mitigate that issue without potentially overwhelming my seedlings with nutrients, I decided to introduce Great White's mycorrhizae (1/2 tsp for a gallon of water) during watering on 11/24. I split this gallon of water between 2 seedlings in 5g pots and 3 seedlings in bonsai pots and ended up with about a 1/2 qt in residual water which I continued to use in a spray bottle to keep the top soil moist over the next two days. Within two days of watering and normalizing the environmental conditions, my seedlings really started to take off. It seemed that the number of leaves appeared to double overnight.