|Fish make wonderful pets, while an aquarium makes a great water altar. All you need is an aquarium and at least one fish. To start, invoke your favorite water goddess, such as Oshun or Yemaya. Then say: "Mother of the waters, I dedicate this aquarium to you. Let it become an altar to honor your elemental magic. Help me keep it pure and healthy as a monument to water's power." That's all it takes.