An automatic feeder earns trust only by performing under observation. A week of testing on the real tank, with the real food, at the real feeding times, exposes the faults that matter: portions that drift, food that bridges and stops falling, clocks that reset, and settings that dump a day's food in one turn. Each stage of the week checks a different failure while you are still home to correct it.
Days One and Two: Measure Portions Dispensing Onto Paper
Start the feeder on a table or on the tank with a sheet of paper under the outlet, loaded with the exact food it will serve on holiday. Set the programme to the times and number of servings you plan to use, then let it dispense onto the paper for the first two days. Weigh each portion on a kitchen scale, or level it against a marked spoon, and write the amounts down. Consistent portions within a small variation are acceptable, while portions that swing widely point to food bridging in the hopper or a dispensing drum that needs cleaning. Flakes bridge and clump readily in humid air, so many keepers test with the small pellets or granules their fish already eat, which flow more evenly through the mechanism.
Days Three to Five: Dispense Into the Tank and Watch the Fish Eat
Move the feeder onto the tank in its holiday position, fitted to the rim or lid exactly as it will sit while you are away. Let it feed the fish at the programmed times and watch each serving land. The right amount disappears within a few minutes, eaten at the surface and mid-water. Food still drifting into the filter, settling on the floor, or clouding the water means the setting is too generous, so step it down and observe again the next day. Err toward slightly less food rather than slightly more, because a week of light feeding in clean water is a far smaller risk than repeated overfeeding in an unattended tank. Note the final setting in writing once the watched feeds look right.
Days Six and Seven: Rehearse the Exact Holiday Setup
Run the final two days as a full dress rehearsal. Fit fresh batteries even when the current set still shows charge, or confirm the mains adapter sits firmly and cannot be knocked loose. Fill the hopper only to the level you will leave, since an overfilled hopper can compact food above the outlet. Unplug the feeder briefly, or switch the socket off and on, then confirm the clock and programme survived, because a feeder that forgets its settings after a short power cut will fail silently mid-holiday. Check that condensation and tank humidity are not softening food at the outlet, and wipe the chute dry. Photograph the final settings for your records.
Line Up a Human Fallback and Leave Written Settings
A tested feeder still deserves a human backstop on longer trips. Ask a neighbour, friend, or sitter to look in at least once during a week away, checking that the feeder light shows, portions are landing, and fish are active, without adding extra food unless your written note allows it. Leave the tested setting, the food type, and the portion you measured on paper beside the tank, plus your contact details and a vet contact for genuine emergencies. Do a water change and a water test in the final days before departure, never on the morning itself, so the tank leaves in a settled state. Care Pass in KinsLe holds those settings, visit dates, and fallback instructions, so your checker works from the tested plan rather than improvising.