I made a paper pattern of 1/2 of the top area with a fold to bring the plastic up to the underside of the hood.
I scored and snapped the lines and cleaned it up with a metal file. Bending was done buy clamping the acrylic between two 5 gal paint stirrer (free from Lowe's). I heated it evenly with a heat gun and bent it 90 degrees.
Thats great fabrication Fl Seagull, your setup looks great. Welcome to our board, I'm going to hop on over to your other thread and see what this 6 gallon nano is turning into. Great setup, nice to meet you@