Insert each slow-release capsule deep into substrate with tweezers near the base of rooted plant. Place root tabs at least 5-6 inches apart. Replace root tabs after 1-2 months. Make sure to bury in at least 1 inch of substrate or they will float and cause ammonia spikes. Maintain weekly water changes and chemistry testing for fish safety. Uses Osmocote for nutrients.  Guaranteed Analysis Nitrogen: 15% Phosphate: 9% Potash: 12% Magnesium: 1.3% Sulfur: 6% Boron: 0.02% Copper: 0.05% Iron: 0.46% Manganese: 0.06% Molybdenum: 0.02% Zinc: 0.05%