Good move on the longer tank Adam
On the advice of Albert, I covered the back and sides of my QT
I didn't have anything really handy except a black garbage bag, but it worked great
My QT fish calmed down right away
Mine is on a black stand and is bare-bottom so all was good
Later on I added travertine tiles to the bottom to cut the glare but I didn't have fish in there long enough to see any results
Hopefully Bart will not look like his namesake for long
Keep up the good work