hey good stuff, definitely subscribed.
i say keep adding the sugar. i have been told it is literally like a sweetener, making the buds have a sweeter smell and taste.
now don't take what i have literally, see the problem here is that there haven't been any good tests yet. no one has done grows specifically only with sugar as compared to only without and then so many other people add different nutes to the solution we can't always be sure what is doing what.
otherwise great job! as for your SCRoG just make sure that you over, under, out possibly skipping squares depending on size of plant, strength of branches, and size of squares in the screen. its definitely not hard. just remember SCRoG really opens up your buds for light you need to make sure you know how far apart to keep the branches and to make sure your plant looks like a tamed bush, remember the SCRoG can really help get light to faaaar away buds down at the bottom of the plant, just gotta make sure you tam those bitches right.