🔧 Tech Aqua 2NR Aquarium Fan — Overview

• A dual-head (2 fan) cooling unit

• Designed for small to medium aquariums

• Uses evaporative cooling (airflow across water surface)

⚙️ Key Specifications

• Fans: 2

• Power supply: 12V DC adapter

• Mounting: Clip-on clamp

• Speed: Normal or high-speed variants

• Cooling effect: Typically reduces temperature by 2–4°C

❄️ How It Works

• Blows air across the aquarium surface

• Increases evaporation → removes heat

• Not a chiller (does not actively refrigerate water)

Works best when:

• Tank is open-top

• Room humidity is moderate to low

📏 Suitable Tank Size

👍 Advantages

• Better cooling than single-fan models

• Covers more surface area

• Affordable alternative to chillers

• Easy installation (clip-on)

• Low voltage (12V) for safety

👎 Disadvantages

• High evaporation → frequent water top-ups required

• Cooling efficiency drops in humid weather

• Cannot maintain precise temperature control

• Not suitable for large tanks

🔌 Usage Tips

• Run during the hottest part of the day

• Keep tank open-top for best results

• Ensure airflow reaches the full surface

• Use a timer or temperature controller for automation

🆚 1NR vs 2NR (Quick Comparison)

🧠 Final Verdict

Good choice if:

• You have a 2 ft aquarium

• Need budget cooling

• Temperature rises moderately (around 28–32°C)

Not ideal if:

• You have a large tank

• You need precise temperature control