Description
Fluval T100 Electronic Heater 100W – Thermal control and continuous 24/7 monitoring for freshwater aquariums up to 100 litres (30 US gallons)
The Fluval Fully Electronic Heater – Fluval T100 Electronic Heater 100W for Freshwater Aquariums (SKU: FLV21) delivers precise electronic thermal control and continuous 24/7 monitoring for freshwater aquariums up to 100 litres (30 US gallons). Built with an advanced electronic sensor microprocessor, it maintains stable water temperatures to prevent dangerous fluctuations and thermal stress in sensitive aquarium inhabitants.
Equipped with an intuitive 360-degree LED light ring, the unit provides high-visibility operational status from any angle—glowing red when actively heating and blue when the target temperature is reached. Designed with safety as a priority, it includes a protective heater casing to safeguard fish and an automatic dry-run shut-off mechanism that cuts power if removed from water.
Usage & Application
When to Use
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Small to Medium Aquarium Heating: Designed for freshwater tanks and planted setups up to 100L (30 US gallons).
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Thermal Stability for Sensitive Species: Ideal for tropical fish, nano species, and dwarf shrimp that require stable, non-fluctuating water parameters.
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Safety-Focused Setups: Perfect for active livestock, thanks to its integrated protective shroud and auto dry-run shut-off.
How to Use / Installation Process
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Attach the suction cup mounting bracket to the interior glass near a point of good water circulation.
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Fully submerge the heater and clip it into the mounting bracket.
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Allow the heater to acclimate to the aquarium water temperature for 15–30 minutes before plugging it in.
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Set the desired target temperature using the easy-grip top dial, then plug the power cord into a GFCI outlet.
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Monitor the 360° status ring: Red indicates active heating, and Blue indicates standby mode.
Product Specifications & Highlights
Key Features
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24/7 Microprocessor Monitoring: Delivers continuous electronic precision to avoid unsafe temperature swings.
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360° Color-Changing LED Ring: Clear visual indicator ring glows Red (heating) or Blue (standby).
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Built-In Safety Controls: Features an integrated fish protection guard and automatic shut-off safety switch if operated dry.
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Fully Submersible & Versatile: Can be mounted vertically or horizontally near filter returns for optimal heat dispersion.
Product Details
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Brand: Fluval
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SKU: FLV21
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Barcode (GTIN/UPC): 0015561148818
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Product Type: Heating & Cooling / Submersible Heaters
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Wattage: 100 W
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Recommended Tank Size: Up to 100 Litres (30 US Gallons)
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Package Dimensions: 429 mm (L) × 66 mm (W) × 55 mm (H)
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Gross Package Weight: 407 g
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Target Environment: Freshwater & Planted Aquariums





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