PolypLab Genesis Rock Pack (4 Pack) – Ceramic Biological Filter Media

PolypLab Genesis Rock Pack (Rock Only, 4 Pack) is a high-capacity biological filtration solution designed for aquariums that demand powerful, long-term nutrient control. Manufactured from a 100% inert ceramic compound fired at over 600°C, Genesis Rocks are built to last for years while providing exceptional bacterial colonisation.

Each block delivers over 23,000 square feet of surface area, allowing beneficial bacteria to thrive and naturally reduce ammonia, nitrite, nitrate, phosphate, and dissolved organic compounds. The ultra-porous structure supports aerobic bacteria on the outer surfaces and anaerobic bacteria deep within the block, enabling efficient filtration across all stages of the nitrogen cycle.

Suitable for both freshwater and saltwater aquariums, Genesis Rocks can be placed under sand beds, within refugiums, sumps, or discreetly hidden in aquascapes—making them a flexible and powerful filtration upgrade for high-bioload systems.

Key Features:

• 4-pack of Genesis Rock ceramic blocks
• 23,000+ sq ft of surface area per block
• Long-lasting inert ceramic construction
• Supports aerobic & anaerobic bacterial growth
• Helps reduce ammonia, nitrite, nitrate & phosphate
• Suitable for freshwater & saltwater aquariums
• Can be placed in sumps, refugiums, sand beds, or aquascape
• Ideal for high bioload and predator tanks
• Safe, non-leaching, and reef-friendly

PolypLab Genesis Rock Pack (4 Pack) offers extreme biological filtration capacity using ultra-porous ceramic media engineered for long-term performance. Designed for demanding systems and heavy bioload aquariums, these blocks provide natural nutrient reduction and exceptional water stability. Available now at Reef freaks.