I decided the sand smelled too musty and deep cleaned my 20 gal tank today. It was fun sifting through sand finding my hiders. Nobody is molting right now, they just went under with this latest cold front. Anyway, I used a bunch of artificial plants and flowers. Now most of my crabs are hiding in the tops of these. I also found some rough rocks to add to the decor. By little ones love to climb them. Cute little guys. I need to find my digital camera so I can show my babies off.