MarinePure High Performance Biofilter Media – 8" x 8" x 4" Block

The MarinePure 8" x 8" x 4" Biofilter Block is a high-capacity ceramic bio media designed to enhance biological filtration in reef and saltwater aquariums dramatically. Engineered with an ultra-porous structure, this block provides enormous surface area for beneficial bacteria to colonize — supporting stable nitrogen cycling and long-term reef health.

Ideal for sumps, refugiums, and large filtration chambers, the MarinePure block helps reduce ammonia and nitrite while promoting nitrate reduction through both aerobic and anaerobic bacterial growth.

Why Biological Filtration Matters in Reef Tanks

Strong biological filtration:

• Converts toxic ammonia into safer compounds
• Stabilizes nitrate levels
• Supports heavy bioload systems
• Reduces nutrient spikes
• Improves overall system stability

At GTA Reef, we emphasize stability and preventive filtration — and MarinePure is one of the most efficient bio-media options available.

Key Features

Massive Surface Area

The 8x8x4 block offers a greater surface area for bacterial colonization than traditional ceramic rings or bio balls.

Dual-Action Filtration

Supports:

• Aerobic bacteria (outer surface)
• Anaerobic bacteria (deep internal pores)

Lightweight & Easy to Place

Fits easily in most sump chambers and can be cut if necessary.

Ideal for Large Systems

Perfect for:

• SPS-dominant reefs
• High-bioload fish systems
• Large sumps
• Frag systems

Ideal For

• Reef aquariums 75 gallons and up
• Systems requiring additional biological support
• Tanks with heavy feeding schedules
• Red Sea, Waterbox, and custom sump systems

Why Buy from GTA Reef (Toronto)

• 20+ years of reef experience
• Guidance on proper media placement
• Local pickup near Yorkdale Mall
• Canada-wide shipping
• Support for stable reef parameters