I added blood meal once but the soil it self already contains , earth worm castings, alfalfameal, bone meal and kelp meal. Circulation is good, I have a 4 inch inline exhaust fan , a intake fan and small humidifier. Temps during the day are around 77 and humidity stays at 55. Night temp gets around 68-69 and humidity stays the same. When I started it I literally had it in a small pot in my basement under a cheap grow hanging light bulb (from home depo I think) I transplanted it into different pot and put in tent 6 days ago. The temp in basement was 78 and humidity was around 65%. It is still growing just the leaves that are new are the only ones that color. The older leaves are still darker green. Also I'm getting new growth in between nodes that is increasing daily