Hummmm.... there are different ways to cover your bottom

...
BB (barebottom) which is NO substrate except maybe a piece of cutting board;
SSB - (shallow sand bed) which is just enough sand to cover the bottom glass to 1/2" - 1.5";
DSB - (deep sand bed) which is 3" + of sand.
If you choose sand, get a fine textured aragonite based sand.
I removed my sandy bottom and the maintenance is so much faster now.