Omega One Super Color 7-Day Vacation Fish Feeders Provides your fish with a premium diet of Omega One Super Color Pellets for a length of 7 days Slow-release shells reveal pellets over time Shells contain beneficial salt to support healthy slime coat Place Super Color Vacation Feeder inside fish tank. It will dissolve over a 7-day period, providing nutritious pellets for 5-10 medium-sized fish. Bowl or aquarium should have adequate filtration and circulation.