Description
SOBO WP-308H Hanging Filter
The SOBO WP-308H is a compact, efficient, and affordable hang-on-back (HOB) filter designed for small to medium-sized aquariums (~150). It offers powerful filtration, simple installation, and quiet performance, making it a great choice for beginner and intermediate hobbyists.
🌊 Key Features
✅ 3-Stage Filtration – Equipped with filter sponge (mechanical), activated carbon (chemical), and space for ceramic rings (biological). Keeps water clean, clear, and toxin-free.
✅ Adjustable Flow Rate – Gentle setting for shrimp or Betta tanks, higher flow for community aquariums.
✅ Surface Skimmer – Built-in skimmer removes oil film, dust, and dirt from the water surface.
✅ Silent Operation – Low noise and vibration, perfect for bedrooms or living rooms.
✅ Easy Setup & Maintenance – Quick access to filter media, simple sponge rinsing, and reusable media.
✅ Compact Design – Slim profile, hangs neatly at the back of the tank without taking much space.
🐠 Suitable For
Tank Size: ~150L.
Fish Types: Tetras, Guppies, Mollies, Platies, Swordtails, Bettas, Gouramis, Dwarf Cichlids, Shrimp & Snails.
⚠️ Not recommended for very large or messy fish like Goldfish, Oscars, or Arowana (unless used as an additional filter).
⚙️ Specifications
Model: WP-308H
Type: Hang-on-back filter
Flow Rate: 580 L/H
Tank Capacity: ~150L
Power Consumption: 5.8W (energy-efficient)
Filter Media Included: Sponge + Activated Carbon Cartridge
Upgradable Media: Ceramic rings, bio-balls, fine filter wool
🧱 Filter Media Setup (Recommended Order)
Coarse Sponge (mechanical filtration)
Activated Carbon Cartridge (chemical filtration)
Ceramic Rings / Bio-balls (biological filtration upgrade)
Fine Filter Wool (optional for crystal-clear finish)
👉 For shrimp tanks, attach a sponge pre-filter on the intake.
🔧 How to Install
Hang the filter on the back/side of the aquarium.
Place the intake pipe inside the tank and attach the surface skimmer (if needed).
Fill the filter chamber with tank water to help priming.
Plug in and switch ON – water starts circulating automatically.
Adjust flow rate to suit fish needs.
🧼 Maintenance
Rinse sponge every 2–3 weeks in tank water (not tap water).
Replace activated carbon every 3–4 weeks if used.
Clean ceramic rings gently when clogged (never replace all at once).
Check skimmer & inlet pipe for blockages.
📦 What’s in the Box
SOBO WP-308H filter body
Sponge & Activated Carbon Cartridge (pre-installed)
Intake pipe with fittings & skimmer
Adjustable flow control
✅ Why Choose SOBO WP-308H?
The SOBO WP-308H Hanging Filter is an excellent budget-friendly option for aquarists looking for reliable filtration. With multi-stage filtering, a built-in skimmer, and low noise operation, it ensures cleaner, healthier water for your aquarium with minimal effort.
👉 Best for community fish tanks, shrimp tanks, and planted aquariums(~ 150 L).



