Newbie Soil Grow (Roots 707, 8x T5 HO lamps)

[HenryPotter]

Hey All - First time posting here, but I've read a bunch of the info. I can't tell if everything is fine and I'm just being paranoid, or if I have a problem starting in my grow. Here's the info that I know:

Strain - Dakini Kush {Cross Info: Pre98BK x Hindu Kush}
# of Plants - 4
Grow Type - Soil - Unaltered Roots Organic 707
Grow Stage - Vegetative
Bucket Size - 7 Gallon (transplanted 4 days ago from .5 gallon pots)
Lights - (2) 4 lamp HO T-5s ~ 4" from top of plant 18/6 Cycle
Nutrients - None yet, just RO H20
PH - 6.9 (Water) , PH test of soil w/ meter - 7.1
RH - 50% to 55%
Room Temperature -73 to 89
Room Square Footage - 4' x 4' x 6' Grow Tent with a 4" Fan pulling air out.
Pests - None Known

Seeds were placed directly into soil and watered in 13 days ago. This picture was taken this morning. All 4 plants are approximately the same size and in the same stage of development. Two questions. First do they look like they are developing at the right pace? Second, do you see those light yellow spots forming on the leaves? Are those a cal/mag deficiency or maybe something I'm never heard of!?

Thanks for any help!

 

[HenryPotter]

Well, despite my worry, the girls still seem to be growing fairly quickly. 24hrs later, here's what we see:

 

[HenryPotter]

Quick Update: Things are going well, and everyone is happy, happy. Starting using the GO BOX at around 21 days from seed cracking.

It's odd though, my nodes are super close and everything seems really bunched up height-wise. 6th node starting up and the plant is only about 5 inches tall.

Pictures tomorrow.

 

[HenryPotter]

As promised, here's a pic. Everything I can tell is that I've overwatered.