Description
JBJ TrueTemp Titanium Heater TG2-300 — Professional-Grade Digital Heating for 50–90 Gallon Aquariums
The JBJ TrueTemp Titanium Heater TG2-300 is a professional-grade 300-watt digital aquarium heater engineered for precise, reliable temperature control in freshwater and saltwater aquariums from 50 to 90 gallons. The JBJ TrueTemp Titanium Heater TG2-300 combines a virtually indestructible corrosion-resistant titanium heating element with a precision digital touch pad controller accurate to ±0.5°F — a level of temperature precision that analog dial heaters cannot approach. The large LED display shows the current tank temperature at all times, and the remote temperature probe — placeable up to 5 feet from the heating element — delivers accurate whole-tank readings across the larger water volume of a 50–90 gallon system. The smart memory chip restores temperature settings after any power interruption, and the auto power-off function with high-temperature LED alert provides continuous protection against overheating. ETL approved for both freshwater and saltwater use.
Key Features of the JBJ TrueTemp Titanium Heater TG2-300
- Titanium heating element — virtually indestructible; corrosion-resistant; superior heat transfer; will not shatter like glass heaters
- ±0.5°F accuracy — 100% digital precision touch pad controller
- Large LED display — constantly shows current tank temperature
- Remote temperature probe — up to 5 feet from element for accurate whole-tank readings in 50–90 gallon systems
- Smart memory chip — automatically restores previous temperature settings after power outage
- Auto power-off safety function — shuts off if removed from water or reaches unsafe temperature
- High-temperature LED alert — activates above 94°F
- Safety guard included — flow-through design protects inhabitants while maintaining continuous water contact
- Fully submersible
- ETL approved
- Compatible with freshwater and saltwater aquariums
Why Titanium Beats Glass — The TG2 Advantage
In a 50–90 gallon aquarium, the consequences of a failed heater are significantly greater than in a nano tank. A shattered glass heater contaminates the water column and can injure fish and invertebrates. The JBJ TrueTemp Titanium Heater TG2-300 eliminates this risk entirely — titanium cannot shatter, does not corrode in saltwater, and provides faster, more uniform heat transfer than glass across a larger water volume.
Remote Probe — Critical for Accurate Readings in Larger Systems
In aquariums of 50 gallons and above, temperature stratification — warm water near the heater and cooler water in other areas of the tank — is a real concern with integrated-probe heaters. The JBJ TrueTemp Titanium Heater TG2-300’s remote probe placed up to 5 feet away measures the actual ambient tank temperature rather than the temperature at the heating element, providing a much more accurate picture of what your fish and corals are actually experiencing.
Choosing the Right TrueTemp Model
Browse all JBJ TrueTemp Titanium Heater models at Quinn’s Fins:
- JBJ TrueTemp TG2-100 — 100W — 20–30 gallons — $96.00
- JBJ TrueTemp TG2-200 — 200W — 30–50 gallons — $104.00
- JBJ TrueTemp TG2-400 — 400W — 60–100 gallons — $119.00
- JBJ TrueTemp TG2-500 — 500W — 90–150 gallons — $126.00
- JBJ TrueTemp TG2-800 — 800W — 160–260 gallons — $141.00
Technical Specifications
| Model | TG2-300 |
| Wattage | 300W |
| Recommended Tank Size | 50–90 gallons |
| Accuracy | ±0.5°F |
| Temperature Display Range | 0–99.9°F |
| Temperature Set Point Range | 32–99°F |
| Probe Distance | Up to 5 feet from heating element |
| High-Temp Alert | LED indicator activates above 94°F |
| Heating Element | Titanium — corrosion-resistant, virtually indestructible |
| Compatible With | Freshwater and Saltwater Aquariums |
| Safety Features | Auto power-off, high-temp alert, out-of-water shutoff, safety guard |
| Certification | ETL Approved |
| UPC | 810067702782 |
| SKU | TG2-300 |
| MAP Price | $111.00 |
For more information, visit the JBJ Aquariums temperature control page.




