Using colorful tiles for the bottom floor of your koi pond can enhance its appearance and create a contrast with the predominantly white color of the Koi. This can give your pond a luxurious look.

However, it’s important to ensure that the focus remains on the koi fish and not just on the colors of the floor. To achieve this, choose soft colors that don’t overpower the fish.

When choosing ceramic tiles for the pond floor, consider the following factors:
1. Waterproof and resistant: Choose tiles that are waterproof and resistant to the growth of algae, mold, and bacteria. They should also be able to withstand temperature changes and the chemical treatments used in pond water.

2. Smooth and non-abrasive: To avoid injury to the koi fish, select tiles that are smooth and non-abrasive. Additionally, ensure that the tiles have rounded edges and no gaps between them to prevent the accumulation of dirt and debris.

3. Compatibility with pond liner and sealant: Some types of ceramic tile can react with certain materials, potentially causing leaks or cracks. It’s important to choose tiles that are compatible with the pond liner and sealant to prevent any problems.

4. Aesthetic: The ceramic tiles should be visually appealing and harmonize with the overall design of the koi pond. They can either match the color and pattern of the koi fish or provide a complementary contrast. Considering these factors will help you select the right ceramic tiles for your koi pond, ensuring both the aesthetic appeal and the well-being of your fish.