Yes, all GT nutrients are formulated based on hydroponic principles, reflecting our deep roots as commercial hydroponic growers. What makes our nutrients special is their versatility. Unlike fertilisers, hydroponic nutrients are designed to be used in both hydroponic systems and conventional gardening with potting mix. We’ve made the Focus range easy to use by clearly indicting the appropriate dilution rate on the bottle, so you can use them with confidence, no matter your growing method.