First Grow! Gorilla Glue Auto

Day 8: Spring watered about 300ml each last night; Gonna start feeding sensi grow next watering, also got sensi bloom, bud candy, big bud and bud ignitor. Suggestions on How much feeding and schedule are welcome. Day 9: Cotyledons are yellow on #3 and yellowish on the other two. Dont know whats going on, but researching quickly I´ve read that this is normal behavior, since the real leafs are fine and the plant doesn´t need the cotyledons anymore. Please comment! Day 10: The new dehumidifier is great. Setup on automatic and keeping humidity levels of 55~65. Soil is still moist; Anxious for the first nute feed. Thinking 1ml per 1,5 liter. I got AN Sensi Grow, Sensi Bloom, Bud Candy, Bud Ignitor and Big Bud. Please give me suggestions on schedules! Day 11: Fed them 2ml of both Sensi Grow AB into 1,5l, watered 500ml each plant. pH 6.1, TDS 277, 27oC. Theyre still so little I was expecting growth by now. Day 12 (01/17): Really worried about growth rate/development of the plants. Don´t know if I underwatered or what. Last night with the fed I felt the pots heavy for the first time. Today I lowered the SF2000 light from 32inches to 24inches. Lets hope for response. Please comment.