For lower aquatic ph and desert aquarium tanks","Galapagos cholla wood is actually a fallen desert cactus skeleton!","Its porous and fibrous texture attracts shrimp and microfauna","Naturally good anchors for growing aquatic plants and look very intriguing underwater.","Has natural tannins that lower aquatic ph gradually and naturally.","Classic decoration for all terrariums and aquariums - can even substitute as a natural perch for all birds.