jaded,

I used glass on mine. Measured what I needed and had a glass shop cut if for me. If I had it to do over, I'd hae them dress up the edges a little. I didn't cut myself, but I came pretty close a couple of times. Mine has four sheets all the same size: three set as a bubble trap between the overflow water/skimmer area and the return area (1 inch apart, with the middle one 1 inch above the bottom), and one on the other side of the return pump area to separate the 'fuge area from the return area. It looks very similar to that shot of the fuge from Melev except that I don't have the overflow comb between the fuge and the return area.