SunSun HBL‑301 is a compact, energy-efficient hang-on-back filter ideal for small aquariums. With a 2 W motor and a flow rate of 300 L/h, it delivers reliable mechanical, biological, and chemical filtration without taking up space inside the tank. Its quiet, low-noise operation and adjustable flow make it perfect for nano tanks, shrimp setups, or serene planted aquariums. The HBL‑301 is designed for easy installation, low maintenance, and stable water quality — a dependable choice for hobbyists who want a simple yet effective filtration solution. Technical Specifications

• Model HBL‑301
• Type Hang-on-back (HOB) filter
• Voltage / Frequency 110 V / 220‑240 V, 50 Hz / 60 Hz
• Power Consumption 2 W
• Max Flow Rate 300 L/hour
• Cable Length 1.5 m
• Dimensions ~85 × 100 × 200 mm
• Weight ~0.3 kg
• Filtration Stages Mechanical + Biological + Chemical
• Suitable Tank Size Small aquariums (e.g. up to ~40 L)
• Operation Low-noise / quiet filter
• Flow Control Adjustable flow valve (cascade‑flow design)