The temp is about 73 in there. I have a little fan circulating air around where the stalks come out of the soil and then the exhaust fan. I open the tent a few times a day to talk to them and tell them they're pretty. I had a 3rd one in there, but it almost died, sprang back to life, and then hermed out, do put that one outside just to let it do it's thing. I started the weekend count at when I flipped to 12/12. I wish I knew the genetics. One of them has a cirtusy smell and the other one is definitely not the same. The plant on the right has significantly more orange hairs and I've seen a few amber trichomes on it.
73 is perfect. It could be a number of other things. I do think they are a bit on the small side but thats not a huge concern unless you are shooting for perfection for commerical grows or instagram likes, You can still grow dank bud without it being worthy of a High Times photo shoot (seems like you are concernced with density). It could also be the airflow and Co2 is not adequate. What wattage are you using for the 2 plants? Also, the fact that it's
vivosun, those are just fluorecents right? or LED? Forgot to mention, I'm personally not a fan of
Fox Farm nutes. I like their soil but did not have good results with their nutes. Could have just been chance but I've switched to a combination of GH for veg-grow-bloom, AN, H&G and couple others not too common. Try Rock Resinator in addittion to Massive by Green Planet ( if these things are in your budget). As well as maybe even consider a PK booster weeks 3-7 (might be too late, but if you have access to a booster like PK 13/14 try using it now).
Also, one last thing-make sure to prune leaves semi-frequently and tear off the small buds towards the bottom of the plant. It causes the plant to direct more resources (nutrients and water) to the top buds. Don't take off too many leaves, though. Just my advice
