Aquascape Once-A-Year Fertilizer is available in both capsule and granular forms. Capsules are ideal for fertilizing established aquatic plants, as they can be easily pushed into the soil without disturbing the plant or requiring repotting. Push capsules directly into the planting media near the plant roots, around 4 inches (10 cm) deep. This ensures that the nutrients are absorbed effectively and do not escape into the pond water. Granular fertilizer is best suited for newly potted aquatic plants, allowing for thorough nutrient mixing during planting. Simply sprinkle the recommended amount in the soil beneath the plant.
| Container Diameter | How Much (Granular) | How Many (Capsules) |
| 6"/15 cm | 3 Tbsp / 2.1 oz (60 g) | 1 |
| 8"/20 cm | 4 Tbsp / 2.8 oz (79 g) | 1-2 |
| 12"/30 cm | 6 Tbsp / 4.2 oz (119 g) | 2-3 |
| 16"/40 cm | 12 Tbsp / 8.5 oz (241 g) | 4-6 |
| 20"/50 cm | 20 Tbsp / 14 oz (397 g) | 7-9 |