Digital heater Fluval Fish & Aquatic · Aquariums & Kits

Fluval

Fluval E100 Advanced Electronic Heater, 100 W

Digital heater

Best for: Accurate, visible temperature control

An electronic heater with an LCD showing water temperature and a colour-changing display that warns when the tank drifts out of range.

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Other sizes on Amazon: E200, 200 W

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What we like

  • Clear temperature display
  • Colour alerts
  • Shatter-resistant guard

Keep in mind

  • Bulky in small tanks
  • Premium price

Our in-depth look

Who it's for

Tropical tanks where you want temperature at a glance.

Tips

Place heaters near the filter outflow for even heat. Unplug before water changes so it doesn't run dry.

Key features

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Questions owners ask

What wattage do I need?

A rough rule is 3–5 W per gallon, depending on room temperature.

Should I unplug it during water changes?

Yes.

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