Help keep your nutrient solution cool with Iceline. This double layered irrigation pipe features a black inner to prevent light penetrating and a white outer layer to reflect heat. Switching your irrigation pipe to Iceline will drop your water temperature by 3-8 degrees Celcius! This is incredibly useful during hot periods as it significantly reduces the chance of root diseases such as Pythium which thrive in warm water. Not only that but a cooler nutrient solution means higher oxygen levels and improved nutrient uptake. Remember the ideal water temperature is 18-21 degrees Celcius.