🧰 Overview

The SOBO WP‑606H is a hang-on-back (HOB) filter designed for aquariums up to roughly 80–100 L. It integrates a pump and filter media into a compact, space‑saving unit, ideal for freshwater and marine tanks.

🔍 Key Specifications

• Model: WP‑606H

• Power Consumption: Approximately 8 Watts 

• Maximum Flow Rate: 400 L/hour (though some sources state up to 500 L/h) 

• Filtration Types: Mechanical (sponge), chemical, and biological media included 

• Suitable Tank Capacity: Up to approximately 100 litres

• Filtering Surface Area: Around 100 sq cm 

• Voltage: AC 220–240 V, 50/60 Hz (standard for many regions) 

• Physical Size: Compact design around 11 cm wide, weighing about 0.55 kg 

⚙️ Features & Functionality

• Three‐Stage Filtration: Combines mechanical, chemical, and biological processes for effective water purification 

• Surface Skimmer: Designed to reduce oil and debris on the water surface 

• Adjustable Flow: Lets you control circulation intensity 

• CO₂ Mixing & Aeration: Special circulation helps with CO₂ dispersion and oxygen supply

• Quiet & Energy Efficient: Built for minimal noise and low power consumption 

• Simple Installation: Hang-on placement, plug in, and start—minimal setup required 

✅ Pros

• Effective 3-stage filtration in a compact unit

• Good choice for tanks up to ~100 L, including planted setups

• Adjustable water flow

• Quiet operation and low electricity use

• Easy to install and maintain

🧼 Maintenance Tips

• Clean sponge media weekly or biweekly to maintain flow

• Replace or rinse chemical (carbon) media every 3–4 weeks, if provided

• Rinse all media using tank water to preserve beneficial bacteria

• Check and clean impeller and inlet regularly

• Be prepared to manually prime after power interruptions

📋 Summary Table

🎯 Final Thoughts

The SOBO WP‑606H is a compact, budget-friendly multi-stage filter well suited for small to medium aquariums, especially planted ones. It handles basic filtration tasks efficiently, but some users have experienced durability issues like motor failure or startup problems. If you're considering one, it's worth ensuring you know how to prime manually and occasionally troubleshoot surface skimmer debris or vibration noise.