The root zone is one of the most important components of a plant, as it is where the nutrients and water are absorbed. Problems can arise, particularly in climates with harsh summers and winters, when the plants are exposed to temperatures outside their optimal range.
What temperature should hydroponic water be?
Plants will perform best in a hydroponic system with water between 65-70 degrees Fahrenheit. When the temperature drops below this, plants will think its the end of the season and will go to sleep. Growth will slow until temperatures raise again.
Likewise, if temperatures raise outside of the healthy range plants will be unable to hold onto dissolved oxygen, a necessary compound for nutrient absorption. A warmer nutrient solution is also prone to pest invasion, and the heat can even stress your plants to the point of halting growth entirely.
The ideal temperature range for hydroponic systems is 65-75 degrees Fahrenheit. Use a thermometer to monitor your temperature levels, and adjust accordingly!
Using a hydroponic water heater
If the temperature in your reservoir drops too low, you will need implement a hydroponic water heater. These are submersible devices that heat up the nutrient solution to the ideal range, and will shut off once it is reached. Once it drops again, the heater turns back on.
These are rated by watts, and need to be placed near the flow of water to be sure the heat circulates properly.
Using a hydroponic water chiller
If the temperature raises out of the ideal range, a hydroponic water chiller is necessary. This connects to your water pump, and sends cold water into the reservoir. These are rated in terms of horsepower, and it is important to size your reservoir chiller correctly.
If you want to learn more about water temperature in your hydroponic system, including how to size your chiller and heater, check out our full article on hydroponic water temperatures.
We also have information on how to install your hydroponic water chiller here.
Visit our learning center to learn more about growing in a hydroponic system! Also, feel free to contact one of our experienced growers at 888-815-9763.