Coral rubble is an ideal natural substrate for a saltwater marine tank or cichlid tank.

Features:

• The coral sand helps in raising and stabilising a higher pH.
• Cyclone proof sand will not blow around, perfect for marine and Cichlid tanks, a good all rounder.
• Finest grade small rubble size, looks brilliant in aquariums, also suits use as filter media.
• Serentiy Natural Aragonite Coral Sand is graded, triple washed, and is ideal for Marine and Reef Aquaria, and fresh water where a higher pH is required.
• The perfect substrate for the base of aquariums and also as filter media.
• Naturally buffers pH and adds calcium.