Red Sea Fish Pharm ARE22003 Coralline Gro Live Rock Vitalizer Salt Water Conditioners for Aquarium, 500ml Coralline gro live rock revitalizer is a trace element and buffer complex that promotes the development of coralline algae It contains specific elements required for the development of coralline algae in all marine systems Use instead of reef foundation B to maintain alkalinity at 3.0 meq/l (8.4 dKH) Do not use coralline gro together with reef color B and C supplements, as this may cause overdosing of specific elements Available in 500-ml bottle