Sure ain't trying to contradict nobody, but if they were mine, I'd wait till your soil got good an dry, then pick up your pot to fill how lite weight it is, then water-feed, them to runoff, they look big enough to me, then pick up your pot an feel how heavy your pot is with all the water in it, then don't water-feed again, until your pot is lite weight again.
Jane likes to go from wet to dry, sometimes my plants are even wilting a little before I water them,
After your plants get a little age on them, a month or so, another good way to tell when you need to water them is when your leaves are looking better than ever, standing very erect, an proud looking, you can pick your pots up then, and it will be very lite weight, too . But they will soon start wilting, if you dont water them.
I always water my plants in a little circle to, as you mentioned above, with seedlings, But after they get a few sets of leaves, I water to runoff, from then to harvest. But everyone does things differently, lol It want hurt a thing if you want to wait another week before you start watering to runoff. Just make sure your soil is good and dry first.
But I would sure lower your light down to about 22-24inches away, maybe 26inches until they start doing better,
I keep my 315 at 18inches when flowering, 22-24inches ,when they are young plants.
What kind of lamp are you running in your light
? What lamp you use makes a huge difference,
imo
HappyGrowing
DimeBagKilla