CaribSea Peace River Gravel

CaribSea's Peace River substrate delivers a naturalistic foundation for freshwater and marine setups. This pre-washed gravel mimics the soft, dark aesthetics of blackwater ecosystems while maintaining chemical stability—pH and alkalinity remain unaffected, giving you full control over water parameters. The 1.0–2.0 mm grain profile suits burrowing species and delicate-bodied fish without risk of injury. At 93 lbs/cubic foot, the 20 lb bag provides reliable coverage and substrate density. Inert composition makes it compatible with marine and brackish systems when proper buffering is maintained. A versatile choice for aquascapers seeking both visual authenticity and biological safety.