Botanicals are a great addition to almost any aquarium. Many of these products release tannic acids that are beneficial to all aquarium inhabitants, from the micro fauna to the centerpiece fish that rules its aquarium. Tannic acids (more commonly called "Tannins") provide antimicrobial properties to keep bad bacteria and other infections at bay, while promoting a healthy environment for beneficial bacteria to grow. Botanicals also provide surface for biofilm to grow, which is great for aquariums like shrimp tanks, where the shrimp are free to graze on the healthy biofilm growth. They are also an appealing addition to your aquarium decorations, providing a natural look to your fish or shrimp tank. Its a great way to make your aquarium look like a slice of a natural body of water. Tannins are great in the aquatics hobby!