Dennerle Eco-Line ThermoTronic

Dennerle Eco-Line ThermoTronic

  • For magnificent plant growth
  • Low energy consumption
  • Slow water circulation
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The Eco-Line ThermoTronic bottom heater from Dennerle is a bottom flood that generates heat in the aquarium's substrate and creates natural nutrient seepage sources in the aquarium through this slow, thermal water circulation. The substrate becomes a huge biofilter. The optimal nutrient supply provides the best conditions for magnificent plant growth.

The ThermoTronic bottom heater is available in 10 and 20 Watt.

Manual Dennerle Eco-Line ThermoTronic - - download PDF


  • Low energy consumption
  • Slow water circulation
  • 12 V safety extra-low voltage for safe operation
  • Energy-saving 230 V/12 V transformer with overload protection
  • Including suction cups for easy laying of the heating cable
  • Rot-proof silicone heating cable


3-year warranty

Dennerle guarantees the performance of this product for the duration of 36 months, given that the purchasing person is also the consumer. The legal defect rights towards Aquasabi GmbH & Co. KG according to §§ 437 ff. BGB (German Civil Code) are not compromised by this warranty.

Extract from the warranty policy by Dennerle

"Guarantee period: 36 months (except wearing parts)
When submitting guarantee claims, please send the equipment to Dennerle's Customer Service department together with the receipt providing proof of purchase. The guarantee covers manufacturing and material defects. Defective parts will be replaced or repaired free of charge during the guarantee period, provided that the equipment has been used only in the correct manner and for the intended purpose. During the guarantee period, the device may only be opened by Dennerle's Customer Service personnel, otherwise the guarantee coverage will lapse. No claims shall be assertible beyond the value of the device, e.g. for damage to fish or plants" Source: User Manual, last viewed 03.11.2021

Dennerle GmbH
Industriestraße 4
66981 Münchweiler an der Rodalb, Germany



Dennerle has been operating in Vinnigen since its foundation in 1966 and, after more than 50 years of company history, the building blocks Dennerle relies on is experience. The philosophy behind Dennerle is to create a small and tangible, intact piece of nature, in harmony with the natural environment. That is why sustainability is a company-wide concept and is implemented at every possible point. In order to achieve an ecologically balanced aquarium, Dennerle relies on a system that is based on 5 pillars. Animals, plants, water, substrate and lighting. Dennerle offers the optimum equipment to bring this complex, but not complicated system into harmony.

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