I'm going to set up a 70 aquarium.

As I sit here next to my fireplace, it occured to me that it might be possible to use either stone veneer (real stone) or cultured stone (formed from concrete) to create a background.

My thought was that I could simply silicone the pieces inside the back of the tank, then use silicone and sand to fill in the cracks.

Has anyone ever done this? Is it feasible? Seems like it might be easier than making something out of resin and styrofoam.

Thanks for any thoughts.