How to properly perform an aquarium water change?

To properly perform an aquarium water change, follow these steps:

1. Turn off all equipment in the aquarium.
2. Use a siphon to remove about 25-50 of the water from the tank.
3. Use a gravel vacuum to clean the substrate while siphoning the water.
4. Treat the new water with a water conditioner to remove chlorine and chloramine.
5. Slowly add the treated water back into the tank.
6. Turn the equipment back on.
7. Monitor the water parameters to ensure the health of the fish.