I think it is weird that there are few options for a 75 gallon tank divider. One in particular is 50 bucks and doesn't even have the suction cups or a hanger. I looked at it's dimensions and it was 18.8 inches high and 17 inches wide. I went to the hardware store and bought a piece of plexi glass that they cut for me. They also drilled some holes for me. I should have got more smaller holes (I'll try that on version 2.0). I also bought the suction cup holders that are used for the aquarium heaters and 3/4 inch PVC pipe. In my picture I used pipe i already had from another project. In version 2.0 I will make sure they are the same height of the plexi glass. Those suction cup holders fit perfectly around the PVC pipe. I put the plexi in the tank and attached the PVC pipes to the plexi with the suction cups. Piled sand substrate on each side. Works pretty good. Hope my idea helps someone else. I think I spend 20 bucks on the materials.