Whatup man... So you want me to critique your shit right.... OK .. Ill be the first to inquire about some shit.
1. The light and fan set up deal.... How you have that going again? what fan?.. is it sitting up on top suckin air out of the cab?... or sitting out on bottom sucking air out?
2. Your watering methods?... it looks like your drizling around the plant base... just get the whole top wet and wait 15 min then do it again... as soon as you have water draining from the bottom you can stop... then dont water again until they feel light when you pick them up.
3. Fans...Im not seeing air circulation... but then sometimes i miss things... But from what i can see... I would add a few more fans blowing across the plants... dont worry thinking wind will damage them.... it will make them stronger ....
Im sure all of these things you have done some investigating on before purchasing your tent...and forgive me if you have this setup to some carbon filte routside of it and such.... But honestly speaking 79 degrees in there is not so good for me... I like the low 70's... There is no need to bring fresh air for your light... Just sucking the hot air through it would do you wonder.... something with this concept in mind...