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Heating FAQs


Answers to the questions most commonly asked about heating.
What size heater should I buy for my aquarium?

It is important to have the correct wattage for the size of aquarium and you should use the guide on the packaging. 

  • If the aquarium is in a particularly cold area, then select the next higher wattage. 
  • If the aquarium is particularly large, it is better to have two heaters located at either end of the aquarium (adding up to the total recommended wattage), to ensure even heat throughout the aquarium.
Can I use a Deltatherm heater in a terrarium?
Does this heater work underwater?
Does it stay on all the time?
How should I position my Deltatherm Heater?
Is the condensation on the inside of my heater normal?
How long is my heater guaranteed for?
My product is faulty, what should I do?