Best Aquarium Heaters · head-to-head

Cobalt Aquatics Neo-Therm 100W vs Orlushy 300W

A sourced, side-by-side comparison. Cobalt Aquatics Neo-Therm 100W is cheaper at $49.12. Every spec and price links to its source.

Full spec sheet

marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.

Spec Cobalt Aquatics Neo-Therm 100W Orlushy 300W
US price $49.12
BrandCobalt AquaticsOrlushy
Released
Wattage (W) 100 300
Tank size range gal up to 29 gal 40-55 gal
Adjustable thermostat Yes Yes
Material plastic glass
Fully submersible Yes Yes
Temperature accuracy f ±0.5°F
Shatterproof guard Yes
External controller No No

Sources — Cobalt Aquatics Neo-Therm 100W: bulkreefsupply.com (verified 2026-08-16). Orlushy 300W: reviewaqua.com (verified 2026-08-16).

What's the difference between the Cobalt Aquatics Neo-Therm 100W and Orlushy 300W?

Where the two actually differ on the specs we track (3 of 8). Matching specs are omitted.

  • Wattage (W): Cobalt Aquatics Neo-Therm 100W 100 vs Orlushy 300W 300
  • Tank size range gal: Cobalt Aquatics Neo-Therm 100W up to 29 gal vs Orlushy 300W 40-55 gal
  • Material: Cobalt Aquatics Neo-Therm 100W plastic vs Orlushy 300W glass

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