FIRST GROW, IMPROVISED TENT

I lowered the light a bit, I didn't exactly measure but about 25cm above the soil, so hopefully it will stop the stretching and won't cause any damage to the little ones. Today at the end of the 1st week, I watered them for the first time since they broke above soil, with dechlorinated tap water, soil pH is 6.9 but cannot say for water tho. I know it might seems like I was a little late for watering, but I just decided to listen to what they have to say, since soil wasn't dry enough to feel the need to water them until yesterday, so I've let tap water dechlorinate over night and most of the next day and now they've had their first drink, and yet many to come I hope. Also I noticed that leaves appear to be kinda pale green, especially GG#4, as well I noticed that they aren't stretching anymore but slowly starting to produce next set of leaves. Now I don't know if pale leaves are from nutrient deficiency, which I deeply doubt because they're still very young plus they already carry everything they need, nutrient speaking, for up to the first two weeks of their life, and soil has nutrients in it as well. Or could it be from receiving too much light, since I lowered it to the level you can see in the last picture of the week, so maybe it is too low now, Or maybe I'm just tripping, and I apologize for the long text, I am just too high and so are my dilemas and doubts. Hear ya in the next week.