A must-have for when growing during the winter or simply to ensure correct water temperatures year-round. These durable Hailea Water Heaters are very easy to use; simply place in your nutrient solution, set the desired temperature and that's it! The inbuilt thermostat will turn the heater on or off as required so there is no risk of over-heating.
The optimum water temperature is between 18-21 Celcius.
The efficiently heat, you will require 1w per Litre of water, e.g. 100w Heater for 100 Litres. Heaters can be over-speced if needed or if the location of the nutrient reservoir is particularly cold.
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