Can you put washed sea glass in a fresh water tank?

It is generally safe to put washed sea glass in a freshwater tank, as long as the sea glass has been thoroughly cleaned and rinsed to remove any salt or other contaminants. However, it is important to note that some types of sea glass may contain sharp edges or may be prone to cracking or breaking, which can pose a hazard to aquarium inhabitants. For these reasons, it is best to carefully inspect any sea glass you intend to add to a freshwater tank and avoid using any pieces that may be sharp or damaged. Additionally, it is recommended to test the pH and hardness of the water in your tank to ensure it is suitable for the specific species of fish or aquatic plants you intend to keep.