botanicals (plural noun)
a substance obtained from a plant and used as an additive
These items are perfect for an aspiring biotope aquarist. They release tannins and humic acid to create darkwater, which can promote breeding and overall improved health in a natural environment for fish and invertebrates.
Cholla wood is derived from the cholla cactus, once it dies and dries out. It is fantastic when used in a shrimp aquarium, as it provides hiding spots for shrimplets and produces biofilm for them to graze on. You can rinse and add directly into your aquarium, or boil to waterlog.
Leaf litter adds not only depth and aesthetics to your aquarium, it also offers other great benefits to promote good health including antibacterial and antifungal properties. A fantastic source of humic acid, which helps to soften water and lower pH. They also produce biofilm and infusoria, a fantastic food source for shrimp and fry.