Description
SOBO WP-303H Hanging Filter
The SOBO WP-303H Hanging Filter is a reliable and energy-efficient external hang-on filter designed for ~80L aquariums. It offers effective 3-stage filtration, quiet performance, and simple maintenance, making it a great choice for beginner and intermediate aquarists.
🌊 Key Features
✅ 3-Stage Filtration – Equipped with sponge, activated carbon cartridge, and bio-media chamber for mechanical, chemical, and biological filtration.
✅ Adjustable Flow Rate – Can be tuned for gentle or strong water circulation, suitable for different fish species.
✅ Waterfall Outlet – Increases oxygen levels and provides natural surface agitation.
✅ Compact & Quiet Design – Slim profile, easy to hang on the back of the aquarium, with low noise during operation.
✅ Easy Media Replacement – Cartridge-based system allows quick swaps; media can be upgraded with ceramic rings or filter wool.
✅ Energy Efficient – Low power consumption with continuous reliable flow.
🐠 Suitable For
Tank Size: ~80L
Fish Types: Guppies, Mollies, Platies, Swordtails, Tetras, Rasboras, Bettas, Shrimp, and Snails.
⚠️ Not ideal for large, messy fish like Goldfish, Oscars, or Arowana (unless used as a secondary filter).
⚙️ Specifications
Model: SOBO WP-303H
Type: Hang-on back (HOB) filter
Flow Rate: 280 L/H
Tank Capacity: ~80L
Power Consumption: 5W
Filter Media Included: Sponge + activated carbon cartridge.
Upgradable Media: Ceramic rings, bio-balls, filter wool, extra sponge.
🧱 Filter Media Setup (Recommended Order)
Coarse sponge (mechanical filtration)
Activated carbon cartridge (chemical filtration, odor & clarity)
Ceramic rings / bio-balls (biological filtration boost)
Fine filter wool (optional – polish water)
👉 For shrimp tanks, use a sponge pre-filter on the intake.
🔧 How to Install
Hang the filter on the aquarium rim (back or side).
Place the inlet tube inside the water.
Fill the filter chamber with a bit of tank water to aid priming.
Plug in and turn ON – water starts flowing.
Adjust flow to suit tank inhabitants.
🧼 Maintenance
Rinse sponge every 2–3 weeks in tank water.
Replace carbon cartridge monthly for best performance.
Clean inlet tube and impeller to prevent clogs.
Never replace all media at once – preserve beneficial bacteria.
📦 What’s in the Box
SOBO WP-303H filter unit
Sponge + activated carbon cartridge (pre-installed)
Inlet tube & accessories
✅ Why Choose SOBO WP-303H?
The SOBO WP-303H Hanging Filter is a budget-friendly, effective, and user-friendly filter for small aquariums. Its slim design, waterfall outlet, and multi-stage filtration ensure crystal-clear water and healthy fish.
👉 Ideal for planted tanks, shrimp tanks, and community aquariums up to 80L.



