The Boyu WF-2025 is a compact, feature-rich hang-on-back filter engineered for small to medium aquariums. This waterfall-style HOB filter combines advanced 3-layer biochemical filtration with energy-efficient operation, making it ideal for freshwater planted tanks, nano aquascapes, and community setups requiring reliable, whisper-quiet water circulation.
Key Benefits:
Balanced Flow Rate (300L/h): Delivers 2-3 complete water turnovers per hour—suitable for tanks 30-50 liters, providing optimal water movement without excessive current
3-Layer Filtration System: Mechanical, chemical, and biochemical filtration removes debris, impurities, and odors while cultivating beneficial nitrobacteria for biological cycling and crystal-clear water
Advanced Biochemical Technology: Multi-stage filter media specifically designed to optimize beneficial bacteria colonization—ideal for planted tanks and established aquariums
Efficient Power Consumption (11W): Well-balanced power-to-performance ratio; economical for continuous 24/7 operation
Super Silent Operation: Excellent shock absorption and vibration dampening ensure near-silent filtration—only pleasant waterfall sounds
Waterfall Aeration Design: Specially engineered cascade flow increases oxygen dissolution and aids CO₂ diffusion—perfect for planted aquariums and oxygen-dependent species
Surface Oil Film Processor: Automatically removes biofilm and surface contaminants for improved water clarity and oxygen exchange
Adjustable Flow Control: Fine-tune water flow with precision knob—slower for delicate plants and fry, faster for heavily stocked tanks
Compact Dimensions: 120 x 104 x 282mm profile fits tank rims up to 14mm—space-efficient without clutter
Large Filtering Area: 30-100 sq. cm of media surface—more effective than competing compact filters
Easy Setup & Maintenance: Built-in pump and filter media; simple assembly with no additional equipment required
Suitable for Fresh & Saltwater: Versatile design works across multiple aquarium types
Perfect For: Small planted community tanks (30-50L), nano aquascapes, breeding tanks, shrimp tanks, betta planted setups, desktop aquariums, and any compact aquarium requiring balanced filtration and silent operation.
Feeding or usage guide
Installation & Setup:
Verify power supply: AC 230V/115V, 50/60Hz, 11W
Mount on side or back of aquarium tank edge
Compatible with tank rims up to 14mm thickness
Important: Keep inlet tube vertical and positioned as close to water surface as possible
Critical: Maintain water level above filter motor at all times to ensure automatic priming. If water level drops below motor, filter will stop during power outage and may not auto-restart
Fill filter chamber completely with water before connecting power
Insert vertical inlet tube into tank
Allow water to settle, then power on
Adjust flow rate using control knob at bottom
Operation:
Maximum flow rate: 300 L/h
Recommended tank size: 30-50 liters (8-13 gallons); suitable up to 60 liters with weekly maintenance
Filtering area: 30-100 sq. cm
Dimensions: 120mm (L) x 104mm (W) x 282mm (H)
Operating power: 11W
Frequency: 50/60Hz
Filter Media Maintenance:
Inspect media compartment weekly for debris
Rinse mechanical sponge every 1-2 weeks in tank water only (never tap water—destroys beneficial bacteria)
Replace activated carbon pad monthly or as flow decreases
Rinse biochemical media only if flow significantly reduced
Clean intake tube every 2 weeks to prevent clogging
Supplied with 1 x Active Carbon Pad and 1 x Sponge—keep replacements on hand
Water Chemistry & Circulation:
Waterfall design naturally increases oxygen levels—suitable for most freshwater and saltwater species
Ideal CO₂ diffusion in planted low-tech tanks; adjust flow downward if surface agitation excessive
Maintains pH stability in small water volumes (40L capacity ideal range)
Gentle flow suitable for sensitive species: shrimp, fry, delicate plants
Tank Compatibility:
Best for 30-50L aquariums with 2-3 weekly water changes
Ideal for planted community tanks with moderate bioload
Excellent for shrimp-only setups (low flow, gentle circulation)
Perfect for nano planted aquascapes (30-40L)
Works well with betta tanks featuring live plants
Troubleshooting:
Filter stops after power failure: Check water level above motor; refill if below motor position
Reduced flow: Clean intake tube first, then mechanical sponge
Wobbling during operation: Secure mounting bracket firmly to tank rim
Air bubbles in outlet: Normal during startup; should clear within 1-2 minutes
Motor hums but no flow: Prime filter by completely filling chamber with water
Noise during operation: Ensure motor is seated securely in hanging bracket
Important Safety Notes:
Never touch electrical plug with wet hands
Keep power cord away from water splashing
Unplug before all maintenance and cleaning
Not suitable for outdoor ponds or very large tanks
Use GFCI outlet recommended for electrical safety
Do not submerge electrical components
Keep electrical connections dry at all times
Keep out of reach of children
Recommended Maintenance Schedule:
2-3 times weekly: Monitor water level and filter operation
Weekly: Inspect intake tube; perform 30-50% water change
Bi-weekly: Rinse mechanical sponge in tank water
Monthly: Replace activated carbon pad; check biochemical media
Quarterly: Deep clean all accessible filter parts
Performance Tips:
Use in conjunction with Planatopia or similar substrates for enhanced biological filtration
Pair with planted tank fertilizers (Planatopia Bloom, Ultra) for optimal plant growth
Weekly water changes (30-50%) maximize filter lifespan in small tanks
Stagger maintenance: clean one media type per week to preserve beneficial bacteria
Buying with confidence
How does delivery work?
Delivery options and charges are confirmed at checkout. Orders over Rs 7,500 qualify for free island-wide delivery.
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Can I return an item?
Return eligibility and instructions follow our refund policy. Contact us if you need help before returning an item.
