Model reference
Finnex HMC-300S 300 W Titanium Aquarium Heater
Model: Finnex HMC-300S Titanium Aquarium Heater, 300 W
This entry covers the HMC-300S manufacturer configuration in Finnex’s US-facing family table checked 2026-11-01. The table supplies its 300 W row, 60–80 US-gallon band, 12.4-inch tube and 2.50 A at 110 V; the inspected grouped US Shop record separately identifies an HMC-300S option/SKU but gives no UPC. Neither source establishes a complete electrical rating, full installation instructions or a present third-party seller package.
This model lookup is separate from the questionnaire shortlist. It does not certify that this model meets your selected requirements.
Exact-model photograph is not verified. No exact HMC-300S product image was verified. The shared Shop gallery uses HMU-labelled imagery and does not identify the HMC-300S assembly or package, so the reference lookup is text-only.
Finnex’s HMC table lists the HMC-300S at 300 W for 60–80 US gallons, with a 12.4-inch tube, 2.50 A at the stated 110 V reference and 68–92°F control. The matcher cannot apply its 60-gallon floor, so this exact configuration is a reference rather than a tank-fit recommendation.
Search this model on Amazon ↗Search results may include other models. Confirm the exact model, applicable region, condition and included parts before ordering.
As an Amazon Associate I earn from qualifying purchases.
Read the detailed model assessment · Find products for my needs
Documented model details
- Finnex’s HMC-300S row states 300 W, 60–80 US gallons, a 12.4-inch tube, 2.50 A at 110 V and a 68–92°F range. The capacity endpoints meet adjacent HMC rows, but the chart is not a performance test or guarantee.
- The captured grouped Finnex Shop record lists an HMC-300S / 300 W option with its own SKU and variant record. No barcode/UPC is supplied, and the shared gallery does not identify this exact heater configuration.
- The HMC family copy describes an adjustable illuminated digital controller, remote sensor and stored-setting memory after a power interruption, plus a titanium element, guard, submersible design and freshwater/marine use. These are manufacturer claims; no accuracy or failure-rate testing is represented.
Limits to weigh
- The stated 60-gallon minimum is essential, but the finder screens only the maximum, so this remains outside ordinary recommendations rather than risk matches below the published band.
- The 2.50 A value is referenced to 110 V; full acceptable voltage and frequency are not stated. Confirm the exact electrical nameplate.
- The inspected Finnex instructions index did not list an HMC manual. Exact immersion depth, waterline, orientation, mounting, dry-operation and clearance instructions remain unverified.
- The Shop selector’s HMC-300S SKU identifies a manufacturer option but does not establish current stock, a third-party offer or package contents. No Amazon listing identity was verified; the central destination is an exact-model search.
- No exact HMC-300S photo was verified. The grouped Shop gallery is shared and HMU-labelled rather than an HMC-300S model image; this reference lookup is text-only.
Check before ordering
- Verify the label and package say Finnex HMC-300S / 300 W, not HMC-200S, HMC-400S or another wattage.
- Treat 60–80 US gallons as a two-sided published band; the model-reference page does not establish fit for an individual aquarium.
- Read the exact unit’s voltage/frequency nameplate and its supplied HMC instructions. The 110 V amperage row and “submersible” family label do not provide complete setup approval.
- Confirm the actual listing, seller, heater/controller/probe contents, returns and instructions; the Shop selector record is not proof of a seller package.
- The central route is a model-specific search, not an exact Amazon ASIN or confirmed offer. Do not choose an HMU image or sibling HMC wattage as proof.