All I,ve been adding is Sea Chem Reef Calcium.(My LR looks real good...Purple, Pink,Maroon, and green Coralline) My local Fish store has a killer reef tank. They use the Sea chem Reef calcium and Coral Vital, and there reef is encrusted in heavy coralline algea. I,m gonna start using the Coral vital this weekend.So I'm kinda curious to hear if any one else is using this combination.