Why do you need the decomposers in aquariums and terrariums?

Decomposers play a crucial role in aquariums and terrariums by breaking down organic waste, such as uneaten food and dead plant or animal material. This process helps maintain water quality and prevents the buildup of harmful substances that could harm the ecosystem. Additionally, decomposers recycle nutrients, making them available for plants and contributing to a balanced and healthy environment for all inhabitants. Their presence is essential for sustaining the overall health and stability of these ecosystems.