15W Nano Aquarium Heater USB Pre-set 26C for 25L

The Castle Dawn Aquatics 15W Nano USB Aquarium Heater is designed specifically for small aquariums, shrimp tanks, betta setups, and desktop nano aquascapes. Its ultra compact 9 cm ceramic heating core delivers a stable 26 °C water temperature, ideal for keeping nano fish and invertebrates comfortable in cooler rooms.

This preset 26C heater is USB powered, making it perfect for power bank backup during power cuts and safe for small tank use where traditional glass heaters are too large or risky. QC and QA tested for reliability, unlike cheap unregulated heaters found on low cost platforms.

Key Features and Important Notes:

• What’s Included:
  – 1 × 15W Nano USB Aquarium Heater
  – 1 × Strong Suction Cup Mount
• Heater Size:
  – 9 cm × 2 cm (3.54 × 0.78 inches)
• Cable Length:
  – 1.2 metres (120 cm / 47.24 inches)
• Preset Temperature:
  – Fixed at 26C (78F)
• Tank Compatibility:
  – Suitable for aquariums 25L and above
  – 25 litres = 6.6 US gallons, 5.5 UK gallons
• Power Source:
  – USB 5V safe low voltage
• Compact Design:
  – Ideal for nano tanks, betta aquariums, shrimp tanks, fry grow-out tanks
• Safety Tested:
  – QC and QA tested for safety and long-term reliability
• Energy Efficient:
  – 15W output with ceramic heating technology
• Usage Notice:
  – Minimum ambient room temperature should be above 0C.
  – If your room is below 15 °C, consider using a higher wattage model.
  – Always submerge fully before switching on.
• Warranty: 1 Year Warranty (T&Cs apply).
• Safety Notice:
  Low-cost heaters from platforms like Temu have been reported to crack, explode, or fail within weeks. All Castle Dawn Aquatics heaters are QC and QA tested for safe, reliable performance. Backed by a 1-Year warranty.