question about what i see at 15 days veg

[vindiesel]

i'm at 15 days in veg, everything good, all plants green and healthy, but over last few days, i notice a very slight droop and a couple ends of leaves turning yellow. i have not started nutes yet. just promix bx soil w/ alittle extra perlite. started 1/2 dose of cal~mag 2 days ago and will continue w/ each watering. using RODI water. 8.0 PH, runoff goes down to 6.1, so soil adjusters are working. the slight droop and yellowing had started prior to cal~mag. plants are under a HTG tent (no PVC). 250W CMH w/ good air movement and circulation. temps are 69-78. humidity 30-34%. i water alittle each day, sometimes i skip a day to see if i notice a difference, which i don't. i water about 4oz each plant, sometimes just barely enough to get just alittle runoff. thanks.
vin

 

[vindiesel]

i would post pics but pic upload feature on IC has been disabled for a few days...

 

[Dr Dog]

not sure dude
I use the promix bx, I am not seeing those problems

possible that they have wet feet? I know the promix holds the moisture

 

[vindiesel]

it's the cadyletons or whatever first set up leaves are. never mind...