I created my own outa polystyrene for my 180, as I wanted it up to 4" thick in areas for tunnels I made for a few fish. It has a slate color w/ green plants and built in bubblers. I did have an issue w/ some silicone I used so had to re-piece it together w/ aquarium silicone but it looks pretty sweet and getting ready to re-install in a few days.


