Tetra Pond Vacation Food 1 or 2 packs of 3.45oz. Vacation Food Slow-release, gel feeder block feeds pond fish for 7 days. The innovative, clean water alternative to messy plaster-based feeders. Will not cloud water to help maintain proper water parameters. Encourages natural foraging, and vitamin fortified to provide select nutrients for immune system health. Use TetraPond Vacation Food slow-release feeder blocks while you're away for the weekend or on vacation.