Hydroponic Nutrients
Our hydroponic nutrients and NPK fertiliser give plants everything they need to grow without soil. Designed for hydroponic systems and indoor herb gardens, they supply nitrogen, phosphorus and potassium plus the micronutrients plants can't get from water alone, for lush foliage, strong roots and bigger yields.
Which nutrient should I use?
- Herbs and Leafy Greens: for hydroponic gardens growing basil, lettuce, spinach and other edible greens.
- Indoor Plant Food: a liquid NPK formula for houseplants in soil or water.
Nutrient FAQs
How much nutrient should I add?
Follow the dosage on the bottle as a starting point. For fine-tuning, measure concentration with a nutrient meter and check the ideal EC and pH for your plant in our plant nutrient chart.
Does pH matter?
Yes. pH affects how well plants can absorb each nutrient. Most herbs and greens prefer a pH of around 5.5 to 6.5, which you can check with a pH meter.
Can I use regular garden fertiliser in hydroponics?
We don't recommend it. Soil fertilisers rely on the soil to supply micronutrients, so plants grown in water can end up deficient. Learn more in what nutrients do plants need.
To replant a smart garden you'll need a growing medium, nutrients and seeds. Shop growing mediums | Shop seeds