My vote is non-removable top, but a 12" dia screw off access lid.
I'd bet that if you made a cut *just* above the band, and made another cut *just* below the cut that you made, at the very top of the 2.25" dimension, you would be able to slip the top back over the top of the tank.
Excellent idea! I actually get it.
Holding a redear sunfish is like running with scissors.
