Fluval Stratum topped with sand

20-gallon long aquarium with a Fluval AC20 hang-on-back filter, excellent condition, no cracks, chips, or leaks. Currently has a layer of Fluval Stratum topped with sand. It was set up for a new aquarium project but I decided to go w 40 gal, the sand and the substrate is brand new. New carbon put into the filter as well. Everything is clean and ready for its next setup. Feel free to message me with any questions