Growing Monitoring Runoff in Recirculating Hydroponic Systems
When cultivating cannabis hydroponically, growers can choose between drain-to-waste and recirculating systems. In drain-to-waste systems, the nutrient solution is discarded after use; in recirculating systems, the nutrient solution is reused.
When using a recirculating system, it is important to collect and test the runoff—the excess nutrient solution that passes through the root zone—because it gives an idea of whether it is suitable for reuse or adjustments need to be made. Neglecting to monitor runoff can lead to salt buildup, resulting in …