Description
SunSun HBL-301 Hang-On Filter
The SunSun HBL-301 is a compact and reliable hang-on-back (HOB) filter designed for small aquariums. With efficient 3-stage filtration, quiet operation, and simple maintenance, it’s an excellent choice for nano tanks, shrimp tanks, and betta setups.
🌊 Key Features
✅ 3-Stage Filtration – Comes with sponge and activated carbon cartridge for mechanical & chemical cleaning. Can be upgraded with ceramic rings or bio-balls for biological filtration.
✅ Compact Design – Slim profile, hangs neatly at the back of the tank, saves space inside aquarium.
✅ Adjustable Flow Rate – Gentle flow option makes it safe for bettas, shrimps, and small fish.
✅ Silent Operation – Low vibration motor, ideal for bedrooms or study tanks.
✅ Easy to Maintain – Quick removal of cartridges and sponges; media can be reused and customized.
✅ Surface Skimmer (optional models) – Some HBL series models include a skimmer; HBL-301 focuses on filtration simplicity.
🐠 Suitable For
Tank Size: 30-100 L
Fish Types: Bettas, Guppies, Endlers, Shrimp, Snails, Small Tetras, Rasboras.
⚠️ Not suitable as the only filter for messy fish like Goldfish, Cichlids, or larger community tanks (use as additional filter).
⚙️ Specifications
Model: SunSun HBL-301
Type: Hang-on-back (HOB) filter
Flow Rate: ~300 L/H
Tank Capacity: 30-100 L
Power Consumption: 2W (very energy-efficient)
Filter Media Included: Sponge + activated carbon cartridge
Upgradable Media: Ceramic rings, bio-balls, fine filter wool
🧱 Filter Media Setup (Recommended Order)
Sponge (mechanical filtration)
Activated carbon cartridge (chemical filtration)
Ceramic rings / bio-balls (biological support, optional upgrade)
Fine filter wool (optional – polishing water clarity)
👉 For shrimp tanks, add a sponge pre-filter to the intake pipe.
🔧 How to Install
Hang the filter on the back of the aquarium.
Attach the intake tube inside the tank.
Fill the filter chamber with a little tank water for priming.
Plug in and switch ON – water will circulate automatically.
Adjust the flow rate to match your aquarium inhabitants.
🧼 Maintenance
Rinse sponge & cartridge every 2 weeks in tank water.
Replace carbon cartridge every 3–4 weeks for best results.
Wash ceramic rings/bio-balls gently when clogged (never replace all at once).
Clean intake tube regularly to prevent clogging.
📦 What’s in the Box
SunSun HBL-301 filter body
Intake tube & fittings
Sponge filter media
Activated carbon cartridge
✅ Why Choose SunSun HBL-301?
The SunSun HBL-301 is a budget-friendly, beginner-friendly, and effective hang-on filter for small aquariums. It’s easy to install, simple to maintain, and provides reliable filtration for nano fish and shrimp tanks.
👉 Best for betta tanks, shrimp aquariums, nano planted setups, and community tanks.




