Hailea Nutrient Heater

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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 y our 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. Show more