I have some autoflowers(big bang) and I am trying!!! to grow them. I have them in front of my window , day temp 25 night temp 18 with very good sunlight. I gave them just some grams fertilizer(I am not sure if is the propert one. the first plant is 40 days old and the other 2 about 20 days old. you can see the yellow leaves. please help me!!!! I don't know what I am doing wrong. Please if you know how to cure my plants will be helpfull. thanks.