Description
Dophin Ceramic Ring 905 (400g) is a high-performance biological filtration media crafted to provide an exceptionally large surface area for colonization of beneficial bacteria. Its advanced multi-porous ceramic structure allows water to flow smoothly through each ring while hosting billions of nitrifying bacteria essential for maintaining a stable, healthy aquarium.
These ceramic rings play a crucial role in the complete nitrogen cycle, efficiently breaking down toxic ammonia into nitrite and converting nitrite into the safer form of nitrate. With a denser pack and larger volume, the 400g variant is ideal for medium to large aquariums, canister filters, sump systems, and any setup requiring robust biological support.
💡 Key Features
✅ Ultra-Porous Ceramic Structure – Maximum surface area for beneficial bacterial growth
✅ Supports Full Nitrogen Cycle – Converts ammonia → nitrite → nitrate effectively
✅ Ensures Stable Water Quality – Maintains biological balance in all aquarium types
✅ Enhanced Water Flow – Cylinder design allows efficient circulation through the media
✅ Durable, Long-Lasting Material – Resists breakdown while functioning continuously
✅ Widely Compatible – Ideal for canister, sump, internal, overhead & pond filters
🐟 Suitable For
• Freshwater aquariums
• Planted tanks
• Goldfish & high-waste fish tanks
• Cichlid setups
• Marine & reef aquariums
• Sump systems & trickle towers
• Canister & overhead filters
• Ponds & high-bioload tanks
⚙️ Specifications
Product: Ceramic Ring 905
Brand: Dophin
Weight: 400 g
Media Type: Biological Filtration
Material: High-porosity ceramic composite
Functions:
• Houses beneficial nitrifying bacteria
• Reduces ammonia & nitrite levels
• Improves water clarity & stability
• Provides long-term biological filtration
🔧 How to Use
• Rinse lightly to remove ceramic dust before use
• Place inside filter baskets, trays, or media bags
• Always position after mechanical filtration (sponge/floss)
• Suitable for submerged and trickle-flow systems
🧼 Maintenance Tips
• Rinse only with aquarium water (never tap water) to preserve bacteria
• Replace in small portions if clogged, cracked, or heavily worn
• Maintain strong water flow for optimal bacterial activity
• Avoid changing the entire media at once to prevent cycling issues
✅ Why Choose Dophin Ceramic Ring 905 – 400g?
The 400g variant of Dophin Ceramic Ring 905 delivers stronger biological filtration capacity, making it perfect for larger tanks or higher-waste systems. Its superior porous design supports stable water chemistry, healthy bacteria growth, and long-term clarity—ensuring a clean, balanced, and thriving aquarium environment.

