stunted growth

Hi there, I have a couple of questions...

I have two clones, 1 is a Kryptonite I got her on June 14th, the other Bruce Banner, got her June 20 and I notice that by now they are growing slow, I have changed the tent and I have replanted them into bigger fabric pots, also added an additional light 3 weeks after I introduced them to 1, could it be shock from too much stress that slowed their growth? or what other things do you think?

I do give them Indo Grow Cal-Mag each watering or so