Submersible Thermostat Heater

R214 - R265


The root zone of plants are an extremely important component contributing to their metabolism and as a result, growth. If temperatures fall out of the optimal range, this will significantly stunt growth. Water heaters are used to keep a reservoir at the optimum temperature in order to allow for the most efficient nutrient uptake for your plants.

Dophin submersible water heaters can be fully immersed in the water and because of this, are highly efficient. These heaters can be placed fairly low in the reservoir (close to the bottom of the tank.)  The heater has an internal thermostat that will activate and deactivate the heater, maintaining an optimum temperature of 20 degrees C. It is usually more efficient if you position it horizontally in the tank, as this distributes the heat more evenly as apposed to positioning the heater upright. 



  • Compact and reliable quality
  • High quality heating element
  • Fully submersible
  • Can function in various nutrient solutions
  • Useful in Hydroponics & Aquaponics
  • Easy to set and adjust temperature
  • Included vacuum cups makes it easy to place the heater in various positions.
  • High accuracy (0.5 deg C)
  • Frequency:  50Hz
  • Voltage: 240V


Deciding on Heater Size

25W - (approx. 25-50 L) Reservoir

50W - (approx. 50-100 L) Reservoir

100W - (approx. 100-200 L) Reservoir

150W - (approx. 150-300 L) Reservoir

200W - (approx. 200-400 L) Reservoir

300W - (approx. 300-600 L) Reservoir 


The amounts vary due to environmental factors