I’m not sure if this helps, I love acrylic tanks but have only ever had glass ones but the premise appears the same. If I’m understanding the post correctly this would be along the same lines as making existing cut outs in the existing hood. As far as material I haven’t seen much in the way of acrylic for diy projects online but a lot of people use the greenhouse paneling to make lids, and I’m sure there could possibly be a working application with a little clever thought for a custom acrylic tank, shopping around you can find decent price points, anyway, here’s a recent coop video doing some lid customizing as well that might spark some thought, just my 2 cents…