Finnex TH-500S 500 W Titanium Heater Element

Exact-model photograph is not verified. Text-only reference lookup. The existing ordinary review uses a shared official TH-family tube-and-guard image, but the gallery does not identify the selected 500 W assembly or retail package. No image is included on this reference page and no exact package photo is claimed.

Finnex lists the TH-500S as a 500 W tube for 70–130 US gallons, with a 14-inch body, but the standalone offer requires a separate controller. Its 70-gallon minimum and incomplete package/electrical details keep this exact-model lookup separate from a fit recommendation.

Search results may include other models. Confirm the exact model, applicable region, condition and included parts before ordering.

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Documented model details

• The TH-500S row is 500 W, 120 V, 4.5 A, 0.75 inch in diameter, 14 inches long, and rated for 70–130 US gallons. Finnex does not state a frequency in the reviewed model material.
• The published 70–130-gallon band overlaps the 300 W TH-300S at 70–80 gallons; the next TH-800S band begins at 140 gallons. The tables therefore do not support treating 500 W as an automatic step-up for every tank size.
• TH-500S is distinct from Finnex’s same-wattage THD-500S: the family table lists THD-500S at 0.62 inch by 12.5 inches and 70–125 gallons, versus TH-500S at 0.75 inch by 14 inches and 70–130 gallons.
• Finnex describes its TH tube as titanium and says TH models include a protective guard, with freshwater and marine use stated for the family. These are manufacturer descriptions, not independent durability or performance tests.
• The standalone Finnex Shop TH selection is a titanium tube only and says controllers are sold separately. A separate Deluxe Combo page identifies a 500 W HC-820M/TH-tube configuration as TH-0500S; that bundle label does not prove a controller is included with the standalone tube offer.

Limits to weigh

• The 70-gallon lower bound is a real published condition that the site’s maximum-only finder rule cannot enforce, so this TH-500S remains outside ordinary finder recommendations.
• The family table lists 120 V and 4.5 A in separate columns, while the combo table labels the corresponding 4.5 A current at 115 V. The reference voltage is unresolved; do not convert or silently reconcile the two entries.
• The standalone tube requires an external controller, but its exact offer does not establish which controller is supplied (if any) or the bundled equipment. The HC-820M manual covers that controller only; its setting range and electrical details are not properties of the TH-500S element.
• The reviewed TH sources do not establish frequency, full permitted voltage range, exact retail SKU/UPC, current stock, delivered seller package, immersion mark, mounting orientation, clearance, or dry-operation instructions.
• The available official TH gallery is shared across several wattages and does not identify the selected TH-500S assembly or package. This reference lookup is text-only; the existing review’s family visual remains scoped as a family appearance image.

Check before ordering

• Confirm that the heater label and carton identify Finnex TH-500S at 500 W; do not substitute the distinct THD-500S or another 500 W heater.
• Verify whether the exact offer is the tube alone or a controller-and-tube package. Check the supplied controller model, connector and load instructions for the actual combination rather than assuming the standalone selection includes one.
• Check the element and controller nameplates for the allowed voltage and frequency. Finnex’s family table gives 120 V and 4.5 A, but its combo table labels 4.5 A at 115 V; the source conflict remains unresolved.
• Compare the complete 70–130 US-gallon manufacturer band with the actual working aquarium and room/target conditions; 130 gallons is not a universal heating guarantee, and a smaller-than-70-gallon setup is outside the stated band.
• Measure the available body space against the listed 14-inch length and 0.75-inch diameter, then consult instructions for the exact tube/controller offer for mounting, immersion and clearance requirements.
• Ask for the precise item/package identity and seller terms. The reviewed manufacturer records do not supply a separate TH-500S retail SKU/UPC or establish what a particular seller will deliver.