CANNA Classic is a complete nutrient solution designed for plants grown in run-to-waste (open hydroponic) systems, where drainage water is discarded rather than returned to the nutrient reservoir. Because plants receive a fresh nutrient solution with every feed, growers can maintain greater control over nutrition while reducing the risk of problems associated with recirculating drainage water. CANNA Classic is particularly well suited to inert growing media such as rock wool, which contribute very little to the nutrient solution. This allows you to manage plant nutrition with precision throughout the growing cycle. Why Choose CANNA Classic? Designed specifically for run-to-waste hydroponic systems Ideal for rock wool and other inert substrates Provides fresh nutrients with every feed Allows for precise control over plant nutrition Helps minimise risks associated with recirculated drainage water Formulated without unnecessary ballast substances A proven CANNA nutrient for open hydroponic systems Best suited for: Run-to-waste systems, open hydroponics and cultivation in inert growing media such as rock wool.