Neptune's years are 164.8 Earth years. Its days are 16 hours and 6.7 minutes long. Although Neptune's days are shorter than our days, its years are still longer than ours.
Most colorants will last in your pond approximately 30 days. You may have to add more pond dye before 30 days if you have execissive rainfall, run-off, a heavy out flow, or evaporation. If your colorant is fading you will visually be able to tell and should add more dye to the water.
The length of time that dermal fillers last depends on the type of filler used and the area injected. On average, you would expect the results of a Hyaluronic Acid dermal filler to last around 6-12 months. Thicker dermal fillers tend to last longer than those used for finer lines.he semi-permanent type (e.g. Radiesse and Sculptra) lasts up to 18 months. The non-permanent fillers, such as, Hyaluronic Acid (HA) derived Hydra Fill and Restylane, last for around 6-12 months, depending upon the site of application and the formulation of the material used.