Precision Micro 4-0-2 Precision Micro is part of a complete nutrient package when combined with Precision Grow and Precision Bloom components. The 3-Part Precision base nutrients are designed to be a full-cycle fertilizer package, suitable for soilless and hydroponic production systems. - An exact ratio of Micronutrients - Added calcium for plant structure and growing fruit - 1 L makes 500 L of solution - Micronutrient component of a flexible 3-part fertilizer package suited to a range of crops and growth stages. - Precision Micro supplies nitrogen, potassium, calcium and essential micronutrients in optimized ratios to meet the demands of heavy feeding crops - Suitable for all types of soilless and water culture systems