Cobalt Neo-Therm 800W Submersible Heater fit check
Cobalt Neo-Therm 800W Submersible Heater is a 800W thin-profile heater. ReefCrafter's 2.5-5 watts-per-gallon band puts it at roughly 160-320 gallons of display water, before room temperature and redundancy choices. At this wattage a controller or a split two-heater setup limits the damage of a stuck-on failure.
Cobalt Neo-Therm 800W Submersible Heater: fits roughly 150-300 gallon systems. Specs, compatibility math, sizing risks, and alternatives before you buy.
Who it is for
Good fit for
- ✓ 150-300 gallon systems, per the catalog fit range.
- ✓ Roughly 160-320 gallons of display water at 2.5-5 W per gallon.
Not a fit for
- ✕ Tanks under about 150 gallons; it is sized above them.
- ✕ Systems over about 300 gallons without adding capacity elsewhere.
- ✕ Running alone on a large tank without a controller; split heat or add a controller.
Listed features
- submersible
- thin profile
- shatterproof
Compatibility math
Safe wattage band
Example: 800W is usually a planning fit for roughly 160-320 gallons before room-temperature and redundancy choices.
ReefCrafter checks both the low-wattage failure and the oversized stuck-on failure.
Risk notes
- A single oversized heater can cook livestock faster than a beginner notices the problem.
- High wattage should be split or controller-protected on most reef systems.
Professional fit context
- Check wattage, controller, redundancy, tank size, and whether two smaller heaters are safer.
- Cobalt Neo-Therm 800W Submersible Heater fits roughly 150-300 gallon systems; confirm that range against the final display volume, sump volume, and livestock plan.
Alternatives to compare
- Bulk Reef Supply BRS 600W Titanium Aquarium Heater System WiFi
600 W vs 800: less heat for smaller tanks.
- Bulk Reef Supply BRS Titanium Heater Element 600W (no controller)
600 W vs 800: less heat for smaller tanks.
- Bulk Reef Supply BRS 1200W Titanium Aquarium Heater System WiFi
1,200 W vs 800: more heat for larger or colder tanks.
Full spec snapshot
- Category
- Heaters
- Build tier
- Premium
- Estimated price
- $150
- Tank fit range
- fits roughly 150-300 gallon systems
- Format
- Thin Profile Heater
- Heater wattage
- 800 W
Related reading
Questions
What size tank is a 800W heater like the Cobalt Neo-Therm 800W Submersible Heater for?
ReefCrafter's 2.5-5 W per gallon band puts 800W at about 160-320 gallons. Cold rooms push toward the smaller end; tanks over 50 gallons are safer with two smaller heaters.
What tank size is the Cobalt Neo-Therm 800W Submersible Heater for?
ReefCrafter's catalog fit range for it is 150-300 gallon systems. Confirm that against your final display volume, sump volume, and livestock plan rather than the box label alone.
What should I compare the Cobalt Neo-Therm 800W Submersible Heater against?
Bulk Reef Supply BRS 600W Titanium Aquarium Heater System WiFi (600 W vs 800: less heat for smaller tanks); Bulk Reef Supply BRS Titanium Heater Element 600W (no controller) (600 W vs 800: less heat for smaller tanks); Bulk Reef Supply BRS 1200W Titanium Aquarium Heater System WiFi (1,200 W vs 800: more heat for larger or colder tanks).
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