Seaoura SR-318 Small Aquarium Heater

The SEAOURA small aquarium heater is designed with advanced dual safety protection. It automatically powers off and triggers an alarm when removed from water to prevent dry burning and potential hazards. Built-in adjustable over-temperature protection allows personalized MAX and MIN temperature settings for enhanced safety. Multi-zone temperature sensors ensure accurate and full water temperature detection (heater must be fully submerged during use).

Mini Fish Tank Heater

Specially developed for nano aquariums, the SEAOURA 25W fish tank heater provides stable and energy-efficient heating for 1–5 gallon tanks. Its compact size (5.7 × 1 × 0.87 inches) allows easy concealment in aquascaping setups, helping maintain a clean and natural aquarium appearance. Ideal for betta fish, shrimp tanks, small tropical fish tanks, and decorative nano aquariums.

Dual LED Display with External Smart Controller

Unlike traditional aquarium heaters, SEAOURA upgrades a high-definition dual LED display that shows real-time water temperature and set temperature simultaneously. Intuitive color indicators make operation simple: red = heating, white = target temperature reached. The external controller design allows safe and convenient adjustments without placing hands in water.

0.1℉ Precision Temperature Control

SEAOURA aquarium heater delivers ultra-precise temperature adjustment with ±0.1°F fine tuning and ±1°F quick adjustment. The high-sensitivity sensor continuously monitors water conditions, maintaining a stable aquatic environment for betta fish, tropical fish, shrimp, turtles, and aquatic plants. Helps reduce stress caused by sudden temperature fluctuations.

Smart Memory Function for Power Recovery

The fish tank heater features a built-in intelligent memory chip that automatically restores the last set temperature after a power outage. No manual reset is required, ensuring continuous and stable heating performance for your aquarium.

Durable Construction & Wide Application

Built with explosion-proof quartz glass and a heat-resistant ABS protective shell, the SEAOURA submersible aquarium heater ensures long-lasting durability and safety. It prevents cracking and protects aquatic life from burns or injuries. Suitable for freshwater tanks, saltwater aquariums, turtle tanks, planted tanks, pet fountains, and plant propagation systems.

Product Specifications