Can you lower your calcium levels in your saltwater aquarium?

Yes, you can lower calcium levels in a saltwater aquarium by performing partial water changes with water that has a lower calcium concentration. Additionally, you can use chemical additives like calcium removers or phosphate binders that help precipitate calcium out of the water. Monitoring and adjusting the calcium levels regularly is crucial to maintain a healthy environment for corals and other calcium-dependent organisms. Always test the water parameters before and after making adjustments.