Hi guys I'm new to all of this and honestly have no clue what im doing and don't really no the lingo, first off I started my plants 4 months ago and my plants don't seem very big so obviously I'm not doing a lot right, I'm growing in doors with one blue grow light and one heat light because our temps have been very cold out, I also have been ceeping a heater on and a fan , fan for air circulation, the building stays from 73 to 80 on our warm days. I currently have six surviving plants out of 13 I started , I've Been watering once a day with plain water out of the hose skipping a day periodically and every other week adding miricle grow, my soil is roughly 45\55. 45 being soil from my yard and 55 being rose potting soil with a small amount of gravel to help with draining, 1 plant seems to be doing great but hasn't gotten any bigger its about 3 1\2 feet tall and the other 5 are anywhere from 2 1\2 to 3 feet but in the last week one plants bottom leaves are yellowish and is rapidly moving upward , and now it seems to be spreading to a few of the others, I read that this is a sign of nitro deficiency but the miricle grow has nitro in it so I'm confused any help for a first timer would be greatly appreciated, thank you for reading