Boxtech Submersible Aquarium Heater 50W for 3-15 Gallon

Key Features:

1. Fish Tank Thermostat
50W aquarium heaters suit for 5-15 Gallon fish tank. Voltage:110V, Power cord is 4.59ft, Max deep water immersion 20 inch/1.7 FT.

2. Fully Automatic Control
Design with External Temperature Controller, Temperature Range is 68 ºF-90 ºF, when water temperature achieve the set temperature, the heater will automatically stop heating when the water temperature is lower than the set temperature, the heater will automatically start heating.

3. Quartz Tube Safety Protection
Made of heat-resistant milky quartz Glass and UL-Approved Power Cord, Controller IPX4, and Heater IPX8 that make it pretty shatter-proof and Explosion-proof and prevent electricity leakage, service life can be 3 years or more.

4. Correct installation
Stick the heater vertical onto the tank side near the water intake or on the way of water flow. (This way the heater can quickly sense the water temperature and make adjustments automatically). Keep the aquarium heater fully submerged in water.

Functions

Anti-Slip Silicone Sucker
Strong suction cups TIGHTLY FIX the heater to the tank, never worry about slipping.

Explosion-proof Quartz Tube
Made of the durable milky quartz tube, with High-heat resistance; Anti-cracking and Non-friable, better than normal glass.

External Temperature Regulator
Precise temperature dial from 68 to 90°F, temp exactness is within 1 degrees Celsius.

Kindly Notices:

1. Before you clean the aquarium or change the water, must cut off the heater power. After 10 minutes of cooling and then take out the heater.

2. Regularly clean the scale on the heater.

Frequently Asked Questions

Q1: Why does the heater have yellow spots or loose quartz?

1. The above phenomena do not affect the use of the heater.
2. The reason for the yellow spots is that the milky white quartz tube of the heater is heated.
3. Quartz is loose due to expansion and contraction by heat.

Q2: Why is the temperature control inaccurate after using the heater for a period of time?

Affected by cold weather, the heater will produce a scale when working in the water for a long time, then the scale attached to the heater will affect the temperature sensing system of the heater and cause the heater temperature to be inaccurate.
Therefore, we have recommended users clean the heater's scale regularly.

Q3: Why is the heater required to be installed vertically where the water flows?

First, the water in each part of the water tank flows through the heater, so that the heater quickly detects the water temperature of the entire water tank and automatically adjusts it to the set temperature.
Second, the water flow continuously impacts the heater, which makes the temperature of the heater diffuse faster, and avoids the heating rod from scalding the fish due to the high temperature.