Plagron Silic Rock — Silicon Additive Silic Rock is a silicium fertiliser that helps your plant against a hidden problem: silicium deficiency. Silicium improves the uptake of nutrients that are essential for your plant. Silic Rock contains silicium in a form that is easily taken up by the plant. It strengthens cell walls and increases resistance. Improves uptake of phosphorus, calcium and micronutrients Strengthens cell walls to improve resistance How to use Plagron Silic Rock Shake well before use. Add a maximum of 1 ml of Silic Rock per 1 litre of water (1:1000). Use this solution during the entire cultivation period each time the plants are irrigated. Attention: This nutrient is not suitable for hydroponic growing systems. If you use an irrigation system, flush the pipes after use. Characteristics NPK fertiliser (1,5-0-1,7), SiO2 (1,0%) Tips from Plagron Use Silic Rock to increase the resistance of the plant.