Tropica Nutrition Capsules 10 pack is a great nutrient supplement for vibrant aquatic plant growth in tropical freshwater fish tanks. These capsules, enriched with nitrogen, phosphor, iron, and micro-nutrients, provide a slow-release formula tailored to the plants' needs. Ideal for stem plants, Cryptocoryne, Echinodorus, Vallisneria, and others with robust roots, the capsules promote healthy growth. Easy and safe to use, Tropica Nutrition Capsules are your key to a flourishing underwater landscape in your tropical freshwater fish tank.