FZONE Aquarium Hang on Back Filter

  • High-Efficiency 4-Stage Filtration: External HOB design saves tank space. Multi-density sponges + ceramic media provide strong mechanical and biological filtration for clear, healthy water.
  • Ultra-Quiet Brushless Motor (<30 dB): Smooth-running brushless motor with vibration-reducing design keeps operation whisper-quiet and fish stress-free.
  • 3 Interchangeable Outlets + Aeration Option: Includes Rainfall, Duckbill, and Direct-Flow outlets. Built-in Venturi aeration boosts oxygen levels when needed.
  • Shrimp-Safe & Tank-Friendly Design: Adjustable intake with strainer protects baby shrimp. Optional bottom-waste suction improves debris removal.
  • Easy Setup for Small Aquariums (5–24 Gal): Fits rim thickness up to 0.79 in. 5W power, 106 GPH flow. Simple installation and maintenance—just fill with water before first use.
$55.00 $70.00
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FZONE’s hang-on-back filter is compact and saves tank space. Once powered on, the built-in pump draws dirty water from the bottom intake, pushes it through four filtration layers, and returns clean water through the outlet, creating a steady and efficient filtration cycle.

 

Four-Stage Filtration System

1. Activated Carbon Sponge – Polishing Filter Removes fine particles and micro debris, helping achieve crystal-clear water.

2. Biochemical Sponge – Mechanical Pre-Filter Captures large debris like fish waste, uneaten food, and plant leaves

3. Biological Ceramic Media – Biofiltration Supports nitrifying bacteria to stabilize the tank’s nitrogen cycle

4. PP Filter Sponge – Particle Filtration Traps medium impurities and provides added surface area for beneficial bacteria growth.

Three Replaceable Outlets + Optional Aeration Mode

          

Straight Outlet

High-volume direct flow boosts tank circulation and improves overall water clarity.

Flat Outlet

Freely adjust the water direction to optimize circulation and prevent stagnant areas.

Rain Shower Outlet

Soft, dispersed water flow increases surface agitation and boosts oxygen levels.

Optional Aeration Function

Venturi air-mixing design automatically injects air into the water, boosting dissolved oxygen

Adjustable Inlet Height

Includes two 8.4 cm extension tubes designed specifically for the inlet pipe. These extensions allow you to match different tank heights and maintain proper water intake, even in low-water situations. Ensure the inlet end stays fully submerged to prevent drawing in air.

Reinforced Seal System with Secure Locking Clamps

Equipped with durable locking clamps that firmly secure the head unit to prevent loosening and leaks. All pipe connections use multiple O-ring seals to create a tight, leak-proof interface, ensuring safer and more reliable operation.

Dual-Mode Intakes Design

Switch easily between Guarded Intake Mode and Waste-Suction Mode.

The intake strainer protects small fish and baby shrimp and requires a minimum 6 cm distance from the tank bottom. Remove the strainer to activate Waste-Suction Mode, ideal for deep bottom cleaning when kept 4 cm above the substrate.

Adjustable Inflow & Outflow Control

Both the intake and output flow can be finely adjusted, allowing you to customize water circulation based on your tank’s needs. This helps prevent excessive current for small fish and shrimp, ensures stable water movement for planted tanks, and improves overall filtration efficiency.