Tetra · Updated October 2026
Tetra HT30: price & specs
Tetra HT30. Every price and spec below is linked to its source and dated — no guesses.
Source: thatpetplace.com verified ✓ corroborated verify in ledger
The Tetra HT30 is listed at $18.99 on thatpetplace.com as of 2026-08-31, the cheapest aquarium heaters (median $39.99); other retailers may be lower. It earns a Bronze Deskmark — 0/100 pay-blind standing, #10 of 10 in class.
Verified Oct 7, 2026 · figures linked to their source in the table below
Seen at
- thatpetplace.com$18.99read
Each figure is what that seller's own page published on the day we read it — not our price of record, and not a live quote. Follow the link for what it costs right now.
Price history
$18.99How we know these prices
The curve above is one dated record of this product's price — our own tracking combined with Internet Archive snapshots of a public page that published the figure, reaching back before we began: this product's own source page wherever the archive holds one, otherwise the named retailer or reference page the point was read from. Every archived point links to the snapshot that proves it, so the host it came from is on the record and you can verify each one yourself.
Verify each point — 8 archived snapshots
- 2021-06-24 — $13.49 · snapshot ↗
- 2022-01-27 — $14.99 · snapshot ↗
- 2022-08-19 — $16.19 · snapshot ↗
- 2022-12-08 — $16.19 · snapshot ↗
- 2024-06-16 — $16.99 · snapshot ↗
- 2024-10-04 — $16.99 · snapshot ↗
- 2025-03-25 — $16.99 · snapshot ↗
- 2026-04-13 — $18.99 · snapshot ↗
Is the Tetra HT30 a good buy?
At $19, the Tetra HT30 is the cheapest of the 9 aquarium heaters we track, where the median is $39.99. On the spec sheet, its wattage of 100 W is the lowest of the 10.
Specifications
| Price (US) | $18.99 ThatPetPlace retail price, verified live 2026-08-16; KensFish lists it at $17.97, a close match. |
|---|---|
| Brand | Tetra |
| Released | — |
| Wattage (W) | 100 |
| Tank size range (gal) | 10-30 gal |
| Adjustable thermostat | No |
| Material | glass |
| Fully submersible | Yes |
| Temperature accuracy (°F) | ±2°F |
| Shatterproof guard | No |
| External controller | No |
Source: thatpetplace.com (read 2026-10-07) · corroborated by tetra-fish.com (read 2026-08-16).
How we checked
Fixed, non-adjustable 78°F (±2°F) internal electronic thermostat, HT30 = 100W for 10-30 gal, glass construction with silicon-carbide-crystal heat transfer, and $18.99 price all verified via live fetch of ThatPetPlace; corroborated by Tetra's official HT submersible heaters page and KensFish's $17.97 listing. Primary source was switched from the manufacturer page to the live-verified ThatPetPlace listing so the cited source is confirmed reachable.
Is the Tetra HT30 worth it vs cheaper aquarium heaters?
Tetra HT30 against its closest cheaper and pricier aquarium heaters on the specs that matter — every value sourced. See all 9 ranked
| Product | Price | Wattage (W) | Tank size range (gal) | Adjustable thermostat | Material | Fully submersible |
|---|---|---|---|---|---|---|
| Tetra HT30 this | $18.99 | 100 | 10-30 gal | No | glass | Yes |
| Finnex HMA-200S | $27.19 | 200 | 60-80 gal | Yes | titanium | Yes |
Frequently asked questions
How much does the Tetra HT30 cost?
The Tetra HT30 has a US price of $18.99 (ThatPetPlace retail price, verified live 2026-08-16; KensFish lists it at $17.97, a close match.), as of 2026-10-07.
How does the Tetra HT30 compare on price?
At $19, the Tetra HT30 is the cheapest of the 9 aquarium heaters we track, where the median is $39.99.
Has the Tetra HT30's price dropped?
No — since 2021-06-24 the Tetra HT30 has risen 40.8%, from $13.49 to $18.99; the lowest we have recorded is $13.49 (2021-06-24).
What is the lowest price the Tetra HT30 has been?
The lowest we have recorded for the Tetra HT30 is $13.49 on 2021-06-24.
Is now a good time to buy the Tetra HT30?
The Tetra HT30 is currently $18.99; the lowest we have recorded is $13.49 (2021-06-24). Every price is dated, so you can judge it against its own history.
What are the Tetra HT30's key specs?
Tetra HT30 (Tetra): Wattage (W) 100, Tank size range (gal) 10-30 gal, Material glass, Fully submersible, Temperature accuracy (°F) ±2°F. Full sourced spec sheet verified 2026-10-07.
Price of record: $18.99 at thatpetplace.com, 2026-08-31. Other retailers may be lower — check the current price:
See Tetra HT30 on Amazon As an Amazon Associate we earn from qualifying purchases.Similar aquarium heaters
Nearest in price — swipe to browse. Every pick sourced and dated.
All aquarium heaters ranked · Open data & methodology · Queryable via MCP
Compare with
Step up
- Finnex HMA-200S $27.19
- Marineland Precision 200W $36.97
- Fluval M150 $36.99
- Eheim Jager 150W $39.99
- Cobalt Aquatics Neo-Therm 100W $49.12
- Aqueon Pro 100W $49.99