The Aruba Plug N’ Play Rock Base is a way to bring a part of the ocean to your home. This base has pre-set holes that accept our artificial corals, which can be purchased separately. The signature rock color of this reef rock can be found on the nearest coast. You have the option of picking between four different sponge colors or you can choose no sponge color at all. This rock base was designed to have a nice arch to give your fish a place to swim through or hide.