Marinepure Spheres 3.8l Box

Description

MarinePure Spheres 3.8l Box — Ceramic biomedia spheres for established community and reef tanks

Stepping up from a trial box to a full dose of biomedia usually means buying the next size rather than two of the small one, and CerMedia prices the gallon box to make that step straightforward. MarinePure Spheres 3.8l Box (SKU: 100893) is a 3.8 L (1-gallon) box of CerMedia’s 1.5 in ceramic biomedia spheres, double the volume of the 1.9 L box in the same range. Each sphere is made from the same inert, open-pore ceramic used across MarinePure, carrying more than 80% open porosity and about 240 sq ft of surface area individually. Bulk Reef Supply, a US retailer, estimates this gallon box holds roughly 75 to 100 loose spheres.

Density across the range works out to roughly 150,000 sq ft of accessible surface area per cubic foot (about 510 m² per litre), so a gallon box of spheres is a substantial dose of bacterial habitat for an established community or reef tank running its own sump or canister filter. The spheres must stay submerged at all times, do not float free, and are best placed in a sump, refugium, wet/dry chamber or canister basket rather than scattered loose in the display. They suit freshwater and marine or reef chemistry equally, can be rinsed, cleaned and sterilised for reuse, and prefer moderate flow; a concentrated jet aimed directly at a tight pile of spheres can chip the ceramic over time. CerMedia also sells the identical sphere in the smaller 1.9 L box and in bulk buckets and drums for much larger systems.

Usage & Application

When to Use

• Established community tanks: A full gallon-box dose for a tank that has outgrown a small starter filter.
• Reef sumps and refugiums: Loose media that fills an irregular chamber shape around rock or baffles.
• Replacing failing bio-balls: A direct swap for plastic media that gives far more surface area per litre.
• Multiple medium systems: One box split between two or three tanks rather than buying several small boxes.

Placement & Usage Guide

• Rinse before use: Clear ceramic dust under tap water before the spheres go into the filter.
• Keep fully submerged: Place in a sump, refugium or canister basket where the spheres never dry out.
• Bag for easy removal: A mesh media bag keeps the full box together for cleaning or moving between systems.
• Moderate flow works best: Avoid a single high-pressure jet aimed straight at the pile.

Product Specifications & Highlights

Key Features

• 3.8 L (1-gallon) box: Double the volume of CerMedia’s 1.9 L starter box.
• Roughly 75–100 spheres: Bulk Reef Supply’s estimate for a box this size.
• 1.5 in ceramic spheres: About 240 sq ft of surface area each.
• Over 80% open porosity: Flow passes through each sphere, not just across the surface.
• Reusable and cleanable: Rinses out and can be sterilised between uses.

Product Details

• Brand: MarinePure (CerMedia, USA)
• SKU: 100893
• Barcode (GTIN/UPC): 857246002011
• Product Type: Filter Media > Ceramic Biomedia Spheres
• Material: Inert ceramic, open-pore 1.5 in spheres, >80% open porosity
• Net Volume: 3.8 L (1-gallon box)
• Sphere Count: Approx. 75–100 spheres (retailer estimate)
• Surface Area: About 240 sq ft per sphere (density approx. 150,000 sq ft per cu ft, 510 m² per L)
• Other Sizes: MarinePure Spheres 1.9l Box (SKU 100892)
• Target Environment: Freshwater, marine and reef aquariums