Heaters · Adjustable, electronic
Cobalt Aquatics Neo-Therm Pro 100W
Manufacturer-rated for aquariums up to 29 US gal.
Flat 100 W fully submersible electronic heater with push-button temperature setting.
Consider: Its published rating stops at 29 gallons. For a larger tank, use the manufacturer’s sizing guidance instead of assuming this single 100W unit is enough.
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US version. Check what’s in the box before you buy.
Tank size Cobalt Aquatics rates it for
Up to 29 US gal
Choose your tank to see where it falls.
Check it against your tank →Specifications that affect fit
- Manufacturer capacity
- Up to 29 US gal
- Power
- 100 W
- Supply voltage
- Not published
- Dimensions
- 2.25 × 1.25 × 9.75 in (L × W × H)
To see what it costs to run, enter the watts on its label and your daily hours in the electricity cost calculator.
Before choosing this model
- Size for actual tank and temperature rise.
- Verify temperature with a separate thermometer.
What Cobalt Aquatics doesn’t publish
- Cobalt doesn’t publish the voltage. Check the label on the box before you buy.
Our buying guides size it for these tanks:
5 gallon10 gallon20 gallon29 gallonBetta tank
A heater rated for your tank can still fall short in a cold room: see how to size one.
Check it against your tank → Something not working? See the troubleshooting guide.
Included items & upkeep
- heater
Plan for the routine work
- Remove algae and mineral deposits from the exterior regularly.
- Follow maker controller-setting guidance if used with an external controller.
To budget for replacement media and supplies, use the first-year cost calculator. For how often and how to clean it, follow the maker’s manual.