It has taken a long time for me to arrive at this conclusion. I believe that my favorite soil, Roots organic original, is the reason why my autos always dwarf and show weird deficiencies/burns. Every time I run new autos, no matter the strain, I end up with a squatted plant that has a low yield. My veg growth starts out fine but somewhere around week 4, I start to get yellowing leaves that start at the bottom and work their way up. I've tried to combat this by feeding which seems to fight the "deficiency" but creates burnt tips and nitrogen toxicity. I've also tried to flush when I see yellowing and not feed nutes but the yellowing gets worse. A little about my grow history: I have been trying to perfect my technique by dialing in my fundementals. I have a humidifier with a built in humidistat that is fairly accurate and keeps my rh in the correct zones, rotating fan, digital and old school mercury thermometers. Second humidistat on the digital thermometer. I have a central air type heat and ac system that keeps my temps at 79 degrees. I ph my water to 6.3. In the past I ran Fox farm nutes Grow Big, Tiger bloom, and big bloom. Recently, I have only been using mega crop, recharge and a tiny bit of organic blackstrap molasses for cal mag. Long story short, I have tried my best to minimize fluctuations in my grow area and nothing seems to help. I tried ffof in the beginning when I use to run photo period strains but every time I ran that soil, I would end up with gnats. I switched to Roots and haven't had a bug problem since. While growing photos, I didn't have my fundimentals in tact, but I remember my old plants never showed the deficiencies that I get with autos. I tried an experiment my last grow. I grew a killer kush f1 fast version photo next to two autos to see if I'm crazy and I believe my results prove my suspicions. As always, my autos dwarfed and showed deficiencies but the killer Kush auto thrived. In 93 days, I got about 86 grams dry off of the killer kush photo but only got about 15 grams off of my cheese auto and 18 grams off of my og gorilla auto. I grew these three plants under two 55w auto cobs and a 450 viparspectra that pulls about 230w at the wall. I would love for some thoughts on this. Is Roots too hot for autos? If so, is there an alternative for someone like me who loves the convenience of autos but doesn't want a hydro/soiless system. I really dont like the idea of watering daily and going through a shit ton of nutes.