youre on day 2. once you started nutes and put them under that 600 they started vegging.
thats a long skinny space, you might want to get a mover and make sure you dont over veg. are those 3gal grow bags? dont over water, they dont drink much at first but the roots will really take off in a few days and then you can wet them down more. they look nice.
make sure your ph tester is calibrated and working right. my tap water almost always comes out very close to 7.0
if youre able to cover all that grow space with light i bet you end up with at least .6#
good luck