Overview
The SunSun HW‑603B is a compact, budget-friendly 3‑stage external canister filter delivering up to 400 L/h (106 GPH) using just 6 W of power. Designed for nano and small aquariums (≈90 L / 20 gal), it’s whisper‑quiet, suitable for fresh or saltwater use, and easy to set up—making it a popular choice among hobbyists.
Key Features
- Three-stage filtration: Mechanical sponge, optional biological and chemical media support ensures clean with space to customise .
- Compact & quiet: Just 6 W power consumption, runs at ~400 L/h, and operates very quietly in small setups .
- Self-priming / easy start: Fill with water and power on—no manual siphoning required .
- Flexible placement: Hose adapters include spray bar option; compact 165 × 190 × 330 mm canister fits tight spaces .
- Pre‑filter compatible: Can serve either as a stand‑alone nano filter or as a pre‑filter to larger SunSun canisters .
Specifications
| Flow Rate | 400 L/h (106 GPH) |
|---|---|
| Power | 6 W |
| Suitable Tank Size | Up to ~90 L / 20 gal |
| Filtration Stages | 3 (mechanical + slots for bio & chem) |
| Dimensions | ≈ 190 × 165 × 330 mm |
| Weight | ≈ 1.5 kg |
Why Choose HW‑603B?
- Great for small tanks: Concise but effective filtration for desktop aquariums and nano setups.
- Energy-efficient & silent: Minimal power draw and noise-free operation in living areas.
- Versatile use: Capable as stand-alone filter or pre‑filter—a dual-purpose design.
- User-friendly: Fill‑and‑go priming, easy maintenance with sponge pads and easy disassembly.
Installation & Maintenance
- Place beside or below your aquarium and attach hoses using included adapters.
- Fill the canister with aquarium water, secure the lid, and power on for self-priming.
- Arrange mechanical sponge pads; add biological or chemical media as desired.
- During cleaning: unplug, disassemble, rinse sponges, snap lid back on—no mess.
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