boxtech 300W Fish Tank Heater User Manual

1. Introduction

Thank you for choosing the boxtech 300W Fish Tank Heater. This device is designed to maintain a stable and appropriate temperature for your aquatic environment, suitable for 35 to 70-gallon tanks. It features an LED digital display, an external temperature controller, and multiple safety mechanisms to ensure the well-being of your aquatic life.

2. Safety Information

• Overheating and Dry Running Protection: The heater is equipped with an intelligent induction unit that includes auto-memory function. It features protection against dry running (E1 error) and overheating (E2 error). If an error code appears, remove the heater from the water and re-immerse it.
• Placement: Do not bury the heater in sand or mud. Immerse the heater vertically in fish tanks and horizontally in turtle tanks for optimal performance and safety.
• Power Cord: Ensure the 5.35ft power cord is routed safely and not pinched or damaged.
• Water Level: Always ensure the heater is fully submerged when operating.
• Initial Stabilization: After initial setup, the water temperature displayed may take 48 to 72 hours to stabilize and accurately reflect the center of the tank.

3. Product Features

The boxtech 300W Fish Tank Heater, model BT-G300, shown installed vertically in an aquarium. The heater features an integrated digital display showing the current water temperature, and an external controller for easy adjustment. Several colorful fish are visible in the tank.

LED Digital Display and External Temperature Controller: The digital display clearly shows the real-time water temperature and any error codes. An external controller allows for temperature adjustments without submerging hands. The display also indicates heating status with a red light (heating in progress) and stable temperature with a green light (real-time monitoring). Error codes E1 (Anti-dry protection), E2 (Overheating protection), and E3 (Over-Temperature Alert at 95°F/35°C) are shown.

Smart Chip for Precise Control: The heater incorporates a built-in high-precision IC chip for sensitive and accurate temperature control, contributing to energy efficiency. A graph illustrates the heating process: starting heating (red light), reaching the set temperature (e.g., 84°F), and maintaining a stable constant temperature (green light, stop heating), with low-frequency heating for minor drops below 1°F.

Metal-Ceramic Heating Element: The heater utilizes a thickened explosion-proof quartz tube design for safety and durability. Inside, it features Nickel-Chromium heating wire for rapid, heat-resistant, and energy-saving heating, along with Silicon Carbide sand filler for fast heating conduction, stability, energy efficiency, and prevention of leakage.

Multiple Protection: The boxtech heater is designed with multiple safety features including anti-dry burning protection, over-temperature protection, and a thickened wire for enhanced durability and safety.

4. Setup Instructions

1. Unpack: Carefully remove the heater and all components from the packaging. Inspect for any visible damage.
2. Placement: Position the heater in your aquarium where water flow is consistent. This ensures even heat distribution throughout the tank. For fish tanks, immerse the heater vertically. For turtle tanks, immerse it horizontally. Ensure the heater is fully submerged.
3. Secure: Use the provided suction cups (if applicable) to secure the heater firmly to the inside wall of your aquarium.
4. Connect Power: Once the heater is securely placed and fully submerged, plug the power cord into a suitable electrical outlet.

Precautions for Use: 1. Place the heater where water flows to allow for even heat distribution. 2. The heating rod probe measures the surrounding temperature, so there may be some inaccuracy in the water temperature at the center of the cylinder, which will only stabilize after 48 to 72 hours.

5. Operating Instructions

1. Power On: After plugging in, the LED digital display will illuminate, showing the current water temperature.
2. Set Temperature: Use the external temperature controller to adjust the desired temperature. The temperature can be accurately adjusted from 68 to 93°F (20 to 34°C).
3. Toggle Units: To switch between Celsius (°C) and Fahrenheit (°F), press and hold the control button for 3 seconds.
4. Monitoring: Observe the LED display for real-time temperature readings. A red light indicates heating is in progress, while a green light indicates the temperature is stable.

6. Troubleshooting

The heater is designed with intelligent error detection. Refer to the following for common issues and their solutions:

• E1 - Anti-dry protection: This error indicates the heater is not fully submerged or is in an area with poor water flow.
• E2 - Overheating protection: This error indicates the heater has detected an internal overheating condition.
• E3 - Over-Temperature Alert (95°F/35°C): The water temperature has exceeded a safe threshold.

For E1 and E2 errors, remove the heater from the water, wait a few minutes, and then re-immerse it fully. Ensure proper water flow around the heater.

When the heater shows an E1 code, it means the safety mode has been activated. This usually happens for two reasons: 1. The heater is in a spot with poor water flow. 2. It was turned on before being fully underwater. To fix this, you can reset the heater by following these steps: Step 1: Unplug the heater, wait 5 minutes, and take it out of the water. Press and hold the control button, then plug it back in while still holding the button. Step 2: Watch the display. As soon as the numbers change from three digits (888) to two digits, unplug it immediately—do not wait for E1 to show up. Step 3: Put the heater back into your fish tank, making sure it is fully underwater. Then plug it in again and set your desired temperature.

7. Specifications

This image provides a comparison of specifications for boxtech heater models, including the BT-G200 (200W, 25-40 Gallons) and the BT-G300 (300W, 35-70 Gallons). Both models share the same voltage (AC110V-120V/60Hz), dimensions (1.57 x 0.8 x 6.69 inches), temperature range (20-34°C / 68-93.2°F), and cable length (78.75 inches).

8. Warranty and Support

For warranty information, technical support, or any questions regarding your boxtech 300W Fish Tank Heater, please contact boxtech customer service through the retailer's platform or the official boxtech website. Please have your model number (BT-G300) and purchase details ready when contacting support.