GT Foliage Focus is truly complete, with all 12 essential minerals including calcium. It contains only what indoor plants need, and nothing they don't — no urea, chlorides or sodium, guaranteed. It reduces the risk of fertiliser burn and is safe even for salt-sensitive and variegated plants. Compatible with the Weakly Weekly Method (best fed little and often to reduce the risk of irreversible deficiencies). pH buffered to help maintain a healthy, slightly acidic soil pH, avoiding nutrients turning toxic or being locked in the soil. Organic metal minerals increase root absorption and reduce the risk of common copper, iron, manganese and zinc deficiencies. Available in 250ml and 1 Litre.