We recommend between each growing cycle making sure to do a quick clean and removing all organic matter like leaves, roots, stems and giving a quick rinse or wipe to your system. Making sure to remove any salts or other material.  We recommend doing a deep clean of the system every 6 months to a year.  This is super easy and takes about 20-30 minutes to do.  We have a step by step guide showing you how to clean in the Hydroponic HUB section.