Description
JBJ TrueTemp Titanium Heater TG2-500 — Professional-Grade Digital Heating for 90–150 Gallon Aquariums
The JBJ TrueTemp Titanium Heater TG2-500 is a professional-grade 500-watt digital aquarium heater engineered for precise, reliable temperature control in freshwater and saltwater aquariums from 90 to 150 gallons. The JBJ TrueTemp Titanium Heater TG2-500 is widely regarded as the most versatile model in the TrueTemp line — powerful enough for large reef systems and FOWLR aquariums, yet accurate enough for the sensitive temperature requirements of SPS corals, seahorses, and other demanding marine inhabitants. The virtually indestructible titanium heating element delivers consistent, efficient heat transfer across the full 90–150 gallon water volume without shattering risk or corrosion vulnerability. The precision digital touch pad controller delivers ±0.5°F accuracy with a large LED display and a remote probe placeable up to 5 feet from the element for true ambient temperature readings. ETL approved for freshwater and saltwater use.
Key Features of the JBJ TrueTemp Titanium Heater TG2-500
- Titanium heating element — virtually indestructible; corrosion-resistant; superior heat transfer in large-volume systems
- ±0.5°F accuracy — 100% digital precision touch pad controller
- Large LED display — constant current temperature readout
- Remote temperature probe — up to 5 feet from element; accurate ambient readings across 90–150 gallon water volume
- Smart memory chip — automatically restores 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 for continuous water contact and inhabitant protection
- Fully submersible
- ETL approved
- Compatible with freshwater and saltwater aquariums
The TG2-500 — The TrueTemp Workhorse for Large Reef and Saltwater Systems
At 500 watts, the JBJ TrueTemp Titanium Heater TG2-500 is the most commonly specified TrueTemp model for large reef aquariums in the 90–150 gallon range. Its output is sufficient to heat a 150-gallon system efficiently without extended on-cycles, while its titanium construction makes it the permanent choice for any saltwater environment where glass corrosion or shattering during water changes would be unacceptable. For reef aquariums housing SPS corals, Acropora, and other temperature-sensitive species, the ±0.5°F precision of the TG2-500 is not a luxury — it is a necessity.
Remote Probe — Essential in Larger Systems
Temperature stratification in 90–150 gallon aquariums can produce measurable temperature differences of 1–2°F between the top and bottom of the water column without adequate circulation. The JBJ TrueTemp Titanium Heater TG2-500’s remote probe placed up to 5 feet from the heating element provides true ambient temperature readings that account for actual whole-tank conditions rather than the localized readings of heaters with integrated probes.
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 TG2-300 — 300W — 50–90 gallons — $111.00
- JBJ TrueTemp TG2-400 — 400W — 60–100 gallons — $119.00
- JBJ TrueTemp TG2-800 — 800W — 160–260 gallons — $141.00
Technical Specifications
| Model | TG2-500 |
| Wattage | 500W |
| Recommended Tank Size | 90–150 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 | 810067702805 |
| SKU | TG2-500 |
| MAP Price | $126.00 |
For more information, visit the JBJ Aquariums temperature control page.







