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.
Add your answer. Red eye irritation how long can it last after getting shampoo in it? I got shampoo in my eye this morning, and my eye is still really red, my eyelid was swollen, but it's normal now, but the eye area is still red. How long can this last? Update: Well Duh I tried visine, on & off through the day, and it didn't work! Follow.