1L £15  5L £55 Plant Magic Plus Magne-Cal works alongside Phosphorus (P) and Potassium (K) to aid the uptake of these vital elements, especially during the bloom cycle, as well as giving your plants a surge of trace elements. As the demand for P & K increases, so does the demand for Magnesium (Mg) & Calcium (Ca) and its vital to have the correct ratio, using Plant Magic Plus Magne-Cal reduces these deficiencies as well as giving the plant a food source to keep the leaves a lush green & preventing nutrient lockout.Plant Magic Plus Magne-Cal can be used in both vegetative and flowering cycles. Enhances the performance of any PK Booster Prevents nutrient lockout Reduces Magnesium & Calcium deficiencies Boosts trace elements and helps leaves a lush green