yellowing leaves

[N420]

Anybody know what this could be plants about 3 weeks old grew from seed in pro mix I am feeding them with advanced nutrients semi grow with b 52 and voodoo juice . temps are fron 75-77 lights on and 65 lights off humidity is around 50 - 55% . growing under a 315 cmh in a 4x4 tent. I will mention I have only feed them once with my nutrients at 1/2 strength . they were transplanted on Saturday into 1 gallon fabric pots from 4 inch pots

 

[nivek]

First place i always go. Sight unseen even perhaps. Overwatering. Hard to tell on my fone but the easiest and most common error. Killing with kindness.

Karma sent friend

 

[N420]

ok thanks I thought it might have something to do with cal mag deficiency but their is calcium in seni grow . I thought I would post a couple of pics of some brown spots that are there as well. it might make sense the over watering it's my first time using fabric pots

 

[Chris Scorpio]

Basics

Water?
pH?
% of nutes?
Light distance
Tap water?

Looks like possible calmag or pH, new growth is pretty line green too

 

[N420]

I am watering with tap water. don't have a digital ph meter but using a general hydroponic test kit with the liquid you put in the water . so after I add notes it's at 6.2 I would say my tap water is at 6.0. light is about 3 ft away they were under t5s until the transplant on Saturday that's when I put them under the 315. I have only used nutes once at half strength