What could you put in the bottom of your fish tank different from norm?

There are many different substrates (materials used to cover the bottom of a fish tank) that you can use in your aquarium, each with its own benefits and drawbacks. Some of the most popular alternatives to traditional gravel or sand include:

1. Bare-bottom tanks: This is a great option for minimalist tanks or for those who want to keep a close eye on their fish's behavior. It is also one of the easiest substrates to clean.

2. Soil-based substrates: These substrates are made from various types of soil, such as potting soil, topsoil, or clay-based substrates. They are often used in planted aquariums because they provide a natural environment for plants to grow. However, they can be more difficult to clean than gravel or sand.

3. Peat moss: Peat moss is a type of organic matter that is often used in acidic water aquariums. It can help to lower the pH of the water and provide a soft, natural substrate for fish and plants. However, it can be messy and difficult to clean.

4. Sand: Sand is a popular substrate for freshwater aquariums. It is easy to clean and comes in a variety of colors. However, it can be difficult to keep plants rooted in sand, and it can also trap debris and waste.

5. Gravel: Gravel is one of the most common substrates used in aquariums. It is easy to clean, comes in a variety of colors and sizes, and provides good drainage for plants. However, it can be difficult to move around and can be sharp, so it is not recommended for tanks with small fish or delicate plants.

6. Large stones or rocks: Large stones or rocks can create a natural and visually appealing look in an aquarium. They are easy to clean and provide good drainage for plants. However, they can be expensive, heavy, and difficult to move around.