What can you do if your pump breaks in fish tank?

1. Turn off the power to the pump. This will prevent the pump from continuing to run and causing further damage.

2. Remove the pump from the tank. Be careful not to drop the pump into the water, as this could damage the fish.

3. Inspect the pump for damage. Look for any cracks, leaks, or other damage that could have caused the pump to fail.

4. If the pump is still under warranty, contact the manufacturer for a replacement. Most pump come with some sort of replacement policy.

5. If the pump is not under warranty, you may need to purchase a new one. You can find replacement pumps at most pet stores or online.

6. Once you have a new pump, install it in the tank and turn on the power. Make sure that the pump is working properly before adding any fish to the tank.

7. Monitor the water quality in the tank closely for the next few days. A broken pump can cause the water quality to deteriorate quickly, so it is important to make sure that the new pump is working properly and that the water is safe for the fish.

By following these steps, you can safely and easily replace a broken pump in a fish tank.