Cherry shrimp mostly feed themselves
A cherry shrimp colony in a mature tank can be left with once-daily checks for a week easily, and longer trips are realistic when the tank is well established. The reason is grazing: cherry shrimp feed almost constantly on biofilm, soft algae, and the microscopic life coating plants and hardscape, so an established tank carries much of their diet within it. A short trip asks the tank to do what it already does every day.
The conditions matter more than the calendar. A newly set up tank with little biofilm growth, or a colony with many berried females and shrimplets, needs the daily checks to be more attentive than a settled colony in an old, planted tank. Judge by how mature your setup is, and keep the first long absence conservative.
The daily check is about stability, not service
A cherry shrimp check visit should change almost nothing. The visitor confirms the filter is running gently, the temperature sits in its usual range, and the water level has not dropped far — shrimp are far more sensitive to sudden change than to a quiet week, so a checker who 'helps' with a big water change is a genuine risk to the colony.
Your written instructions should say this plainly: top off evaporation only, using the prepared water you left beside the tank, and add nothing else — no fertiliser, no water conditioner measured on the spot, no new foods. If the checker spots several dead shrimp or cloudy water, that is a phone call to you, not a cue to start changing water on their own judgement.
Feeding is the one thing to ration hard
Cherry shrimp need remarkably little added food, and holiday overfeeding is the classic way a shrimp tank sours while the owner is away. Uneaten food decays between the gravel and plants where shrimp live, and the colony picks through the pollution at close range. Portion any scheduled feedings before you go — many keepers feed nothing extra at all on short trips, or leave a single measured portion for mid-trip.
An Indian almond leaf or similar botanical left in the tank before departure is a tidy holiday solution: it releases food value slowly as it softens and grows biofilm, feeding the colony across days without a checker's guesswork. Tell your visitor that shrimp gathered on the leaf are eating well, not starving, and that an empty-looking tank at a glance usually just means the colony is spread out grazing.
Protect the colony from its environment
A shrimp tank left for a trip needs its surroundings considered too. Make sure no one sprays cleaning products, insect sprays, or air fresheners near the tank while you are away — airborne chemicals that barely register in a room can reach open water and harm invertebrates. Ask anyone house-sitting to keep sprays out of that room entirely.
Set lights on their usual timer, leave the tank's routine written in one short page, and agree which observations earn a call: a silent filter, a temperature far from normal, or many shrimp at the surface. On KinsLe's Care Teams, the shrimp tank's short routine sits as a checklist for whoever calls in, and the dated entries show the colony was looked in on to schedule.