Nice Job on the DIY! Looks Pro! I have the same one, and find I still have to offset the lid with those fully open. I do like to have the humidity only as high as I need it, no higher, so it is quicker/easier to harden them off. Good Luck! I use 2" Netcups with Neoprene pucks all the way from cutting to harvest. I find the pucks do not allow any humidity to sneak above the lid in Aero/Hydro, so the Dome IS useful. When I used to use hydroton in larger netcups, enough humidity escaped through that I never needed the Dome.
Hey I just discovered you started a journal, let me jump over there and catch up, Looks like you are on your way to becoming Perpetual and Self Sufficient! Some of my favorite Growing Terms!