I am using glass partitions. I just had them cut at the Hardware yesterday. 6 panes cost me a total of $10 ( Three @ 11 7/8"x 13" ( Bubble trap ), One @ 11 7/8 x 14" ( skimmer section ), two @ 4" x 15" ( the 2 sides for the intake box ). I also had them 45 deg. cut the bottom corners, so they didnt cut into the silicone on the tank.