What about water temperature?

This is another critical factor in hydroponics. It is important to know that the warmer the water in your reservoir is, the less oxygenated it is. As high temperatures promote the development of pathogens, you should, as far as possible, keep the temperature of your water between 18 et 26°C. Use microorganisms such as trichoderma harzianum or the Trikologic S mixture of bacteria and fungi to help the roots withstand the heat. When adding water to the reservoir, it is best to make sure it is the same temperature as the water already in the reservoir. Plants do not like change, especially in the root zone.”