Description
DoPhin Slim Hanging Filter SH250
The DoPhin SH250 Slim Hanging Filter is a space-saving, efficient external filter designed for nano and small aquariums up to 60 litres. With its slim profile, multi-stage filtration, and whisper-quiet motor, it’s an excellent choice for betta, shrimp, and planted tanks.
🌊 Key Features
✅ Slim design – Ultra-thin body that saves space and doesn’t clutter the aquarium.
✅ Multi-stage filtration – Comes with sponge and activated carbon cartridge; can be upgraded with ceramic rings or bio-balls for stronger biological filtration.
✅ Adjustable flow control – Gentle enough for bettas and shrimp, can be increased for small community setups.
✅ Surface skimmer option – Helps remove oil film, dust, and floating debris for crystal-clear water (available in certain models/attachments).
✅ Quiet operation – Low-noise motor, perfect for bedrooms or living spaces.
✅ Easy maintenance – Simple cartridge replacement and quick cleaning process.
🐠 Suitable For
Tank Size: Up to 60L.
Fish Types: Bettas, Guppies, Shrimp, Snails, Small Tetras, Rasboras, Platies, Endlers, and other nano fish.
⚠️ Not suitable as the only filter for messy fish (Goldfish, Cichlids, Arowana). Can be used as a secondary filter in larger setups.
⚙️ Specifications
Model: SH250
Type: Slim hang-on-back (HOB) filter
Flow Rate: 250 L/H
Tank Capacity: ~ 60 L
Power Consumption: 4.1/4W (very 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)
Activated carbon cartridge (chemical filtration)
Ceramic rings / bio-balls (biological filtration – optional upgrade)
Fine filter wool (for crystal-clear finish)
👉 For shrimp tanks, add a sponge pre-filter on the intake.
🔧 How to Install
Hang the filter on the aquarium rim (ensure it fits snugly).
Place the intake tube into the water.
Add filter media/cartridges in the chamber.
Fill the filter box with a little tank water to aid priming.
Plug in and switch ON – adjust the flow as needed.
🧼 Maintenance
Rinse sponge/cartridge every 2–3 weeks in tank water.
Replace activated carbon every 3–4 weeks (if used).
Gently rinse ceramic rings/bio-balls when clogged (never all at once).
Check impeller and intake tube for dirt or blockages.
📦 What’s in the Box
DoPhin SH250 slim filter body
Sponge + carbon cartridge (pre-installed)
Intake tube with strainer
Flow control knob
✅ Why Choose DoPhin SH250?
The DoPhin SH250 Slim Hanging Filter is the perfect choice for hobbyists who need an ultra-quiet, slim-profile filter for nano and small aquariums. Its efficient filtration, adjustable flow, and easy maintenance make it beginner-friendly while keeping water clean and healthy.
👉 Best for nano tanks, betta tanks, shrimp tanks, and planted aquariums up to 60L.





