Mounting it where it will stay dry
An automatic feeder lives in the worst spot in the hobby: warm, humid air rising off the very water it feeds. Mount it firmly on the rim or lid with the outlet over open water, not above a brace or cover glass where food piles up, and keep it clear of the filter outflow's splash zone. Moisture is the enemy inside the drum, since damp flake cakes, pellets swell, and a feeder faithfully dropping clumps is worse than none at all. If the tank has a tight hood, position the feeder where condensation does not drip straight into it, and keep the drum's lid properly closed between fills. A feeder knocked askew by a careless elbow drops its ration onto the lid, so check its seating whenever you have worked in the tank.
Calibrating portions on paper first
Never let a new feeder feed fish before it has fed paper. Set it up over a dry sheet, run it through several cycles on its smallest setting, and compare what lands: portions vary by food, since flake drifts and bridges while pellets meter more honestly, and they vary again as the drum empties. Adjust until one cycle drops close to the amount you would hand-feed, erring small, because a feeder's job is to prevent hunger and hold a routine, not to replicate a feast. Repeat the paper test whenever you change food types, and note the setting that worked. That short session of suspicion is what separates a feeder that keeps fish thriving on holiday from one that dumps three days of food in a single morning.
Proving it while you are still home
Commission the feeder like a sitter: give it a trial week while you are there to audit it. Check each day that a portion dropped, that it landed in the water, and that the fish ate their normal amount; check the water at the end of the week for the cloudiness that betrays double portions. Confirm the timer after any power cut, since many feeders hold their settings only while the battery does, and put fresh batteries in before any trip rather than trusting the ones from the trial. Top up the drum before you leave, but not to the brim with food that will sit in humid air for weeks. Only a feeder that has fed your tank correctly for a week under your eye has earned the holiday.
The weekly check that keeps it honest
A feeder that was right in its trial week drifts: batteries fade, drums cake, a knock shifts the outlet. Give it a standing weekly check, portion dropped, drum turning freely, food inside still dry and fresh-smelling, batteries alive, and a fresh paper test after any change. Pair it with the one thing it cannot do, which is put eyes on the fish: someone still needs to look at the tank during a long trip, even if the feeder handles the meals. Putting that weekly feeder check into KinsLe Care Teams as a recurring duty, marked done with a timestamp, means the machine is audited as reliably as it feeds, and a fault is caught in days rather than discovered after the holiday.