First grow, auto purple diesel

Day 1: Started germination of two seeds in cup of water. Transferred to paper towel in the evening. Day 2: Both seeds have sprouted little taproots! Gonna plant them tomorrow. Day 3: Planted both seeds in moist soil, covered with saran wrap and placed in dark closet Day 5: Both seeds have sprouted, started lights at 28" distance with a 12/12 schedule. One plants cotyledons were stuck closed by the seed membrane, but after pulling it off by hand they opened. Day 7: Both plants getting kinda long so lowered the lights to 20" and upped the schedule to 18/6. Soil was getting very dry under the light so I watered them a little