Adjustable Quartz Glass Heater 100 Watt Bi-Metal Construction

Lifegard Aquatics 100-Watt Adjustable Aquarium Heater Overview

This is a 100-Watt Adjustable Aquarium Heater built by Lifegard Aquatics. It’s constructed of a shatterproof quartz glass that can be fully submerged in your aquarium or sump. This heater is safe to use for freshwater aquariums, planted tanks, saltwater aquariums, and reef tanks. It is energy efficient and runs on 120V/60Hz with a 6 foot power cord. It includes suction cup mounting brackets to attach to your aquarium or sump.

Lifegard Aquatics adjustable heaters are easy to set up and feature LED indicator lights that tell you visually what the heater is doing:

🔴 Red = Heating. 
🟢 Green = Operating at a Set Temperature. 
🟣 Purple = Heater was Operated Outside of Water and Thermal Protection was Activated (Permanent Shutoff)

Product Highlights

• Submersible quartz heater safe for freshwater aquariums and saltwater tanks.
• Easy to set thermostat features LED power indicator light showing operation.
• Energy-efficient 120V 60Hz operation.
• Quartz Glass Tube, 6’ Cord, and Suction Cup Mounting Brackets
• UL Listed with Thermal Protection and Electronic Temperature Control for Safety
• Rated for Use in Aquariums from 30 to 45 Gallons

Why Does Your Aquarium Need a Heater?

Aquatic life does not respond well to major fluctuations in water temperature. In nature, wild temperature swings are rare. However, in an aquarium, the temperature can rise or fall fairly quickly. That is why an aquarium heater is an essential piece of equipment for most aquarists. It is a part of your aquarium’s life support system.

Most of the cool fish, plants, corals, and inverts you see available in pet stores and online would be impossible to keep without an aquarium heater. In short, owning an aquarium heater and setting it up properly are essential for the survival of the animals in your care… so you want to pick a good one!

Fish and other aquatic species do not produce body heat on their own, so their well-being is related to the temperature in which they are kept. Temperature swings are known to cause stress, so heaters are key to keep our wet pets happy, healthy, and comfortable. Having the right temperature can even inspire some species to spawn or reproduce!

About Lifegard Aquatics Heaters

At Lifegard Aquatics, we manufacture two types of aquarium heaters: adjustable and preset.

The main difference between our heaters is that one is adjustable and the other is preset to 78° F, the ideal temperature for most tropical fish. Preset heaters are easier to use because they require no adjustment at all. This reduces the risk of under or overheating. While both heater styles are small, preset heaters are smaller, making them preferable for tiny pico tanks.

Here is a quick rundown on the similarities and differences between our two types of heaters:

Thermal Protection

An aquarium heater is a device that produces heat so there is always the possibility it could become an electrical hazard. That is why Lifegard Aquatics UL Listed heaters are built to the highest standards of safety. The "UL" in the UL Listed stamp on our products stands for Underwriter Laboratories, which is a third-party certification company that has been helping to make products safer for more than a century. To qualify for the UL Listed badge, we had to build a safety feature into our heaters called Thermal Protection. If any of our heaters are left to operate outside of water, Thermal Protection is automatically activated. This permanently shuts off the heater and eliminates the possibility of an electrical hazard.

Aquarium Heater Tips

• Good water circulation is going to help your heater do its job more effectively.
• Monitor your aquarium water temperature using a thermometer. We sell an award-winning digital thermometer and a digital thermometer/hygrometer to fit your  needs.
• Monitor the temperature of the room where your aquarium is located. Using your home’s built-in climate-control technology to automatically turn on fans or your air conditioner may be necessary to keep your tank safe during the summertime.
• Unplug your aquarium heater before removing it from the water. Our heaters permanently shut off if you remove them from the water while plugged in to prevent electrical accidents.

Heater Instructions

1. Attach the heater to your aquarium using the suction cup mounting brackets.
2. Aquarium water level must be up to Minimum Water Level Line indicated on the heater.
3. Wait 20-30 minutes for the thermostat to acclimate to water temperature.
4. Plug cord into power outlet. Make sure the cord has a drip loop.
5. Turn the Temperature Control Knob clockwise until the pilot light turns on.
6. Monitor the temperature closely with the aid of an aquarium thermometer until desired temperature is reached. Once the desired temperature is reached, turn the temperature control knob counterclockwise until the pilot light goes off. Verify temperature on a regular basis to ensure that the temperature is maintained.
7. For higher temperatures, turn the Temperature Control Knob clockwise until the pilot light illuminates.
8. For lower temperatures, simply turn the Temperature Control Knob counterclockwise in small increments and monitor with the aquarium thermometer.
9. Verify temperature setting regularly for the next 6 to 8 hours to ensure that the proper temperature is maintained.

LED Indicator Lights Explained

Red 🔴 = Heating coil is in heating mode.
Green 🟢 = Maximum temperature is reached. Heater coil is off but still functioning. 
Purple 🟣 = Heater was operated out of water. Thermal Protection shut the heater off before any damage occurred. The heater cannot be operated again once the purple light is on.

CAUTION

Your aquarium heater must never be operated outside of the water. Before removing from the water, unplug and leave the heater in the water for 30 minutes. Allow the heater to cool. Be sure to unplug the heater during water changes or regular maintenance.

Manufacturer Warranty

Lifegard Aquatics warrants the original purchaser of the product against defective material and workmanship under normal use for a period of 1 year from the date of purchase. To make a warranty claim within 30-60 days from the original purchase date, we usually recommend first contacting the authorized dealer where you purchased the product. Many merchants offer store warranties and you have your claim resolved faster this way. If you are outside the 30-60 day window, please email info@lifegardaquatics.com with details of the problem, your contact information, and attach a copy of your receipt. We respond to most email inquiries within 24-48 hours Monday through Friday.

Lifegard Aquatics Heater Comparison Chart

Preset vs. Adjustable: What's the Difference?