Seachem Natural Substrates – 3.5kg Range (Multi-Option Listing)

Seachem’s range of natural dry substrates offers aquarium keepers high-quality, mineral-rich options to support healthy marine, reef, or tropical environments. Each 3.5kg variant is dry-packed for maximum value—free from unnecessary water weight and perfect for aquarists who want full control over their tank’s appearance and water chemistry. Choose from Meridian, Gray Coast, or Pearl Beach, each offering unique characteristics suited to different aquascaping styles and system requirements.

1. Meridian (Oolitic Aragonite)
   A premium aragonite substrate with a uniform grain size of 0.25–0.5mm. Ideal for reef tanks, it helps stabilise calcium and alkalinity while supporting pH balance. Perfect for reef inhabitants that require a fine, consistent base.

2. Gray Coast (Calcite)
   Made from natural calcite, this subtle grey substrate is suitable for marine, reef, and tropical aquaria. Its composition supports stable water conditions, particularly calcium and pH. Offers a clean, modern look while performing a vital buffering function.

3. Pearl Beach (Aragonite)
   Similar in composition to Meridian but with a more varied grain texture for a natural, mixed-grain appearance. Buffers calcium and alkalinity while helping prevent pH swings. A versatile choice that complements a wide range of tank setups.

Key Features :

Whether you're building a reef, setting up a tropical display, or refreshing an existing tank, Seachem's dry substrate range provides a dependable foundation for aquascaping and long-term aquarium health.

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