Write the feeding line so it cannot be misread
Write the feeding instruction for a betta as a number, a food, and a time, with nothing left to interpretation. A note that says feed daily invites a carer to judge a daily amount for a fish whose stomach is tiny and whose begging is theatrical, so instead write the portion out and, better still, portion it into labelled pots before you leave. Add the sentence carers most need in writing: if a feed is missed, skip it, never double the next one. Note where the food lives, that no other food in the house is suitable, and that uneaten pieces should be lifted out rather than left to soften and foul a small tank over the holiday.
Write the warmth check as a reading, not a feeling
Write the warmth instruction for a betta as a thermometer reading to compare, not a feeling to judge. State the number your tank normally shows, where the thermometer sits, and the exact response to a clear drop: check the heater is plugged in and switched on, then call you rather than turning dials or adding warm water from a kettle or tap. Include the top-up instruction alongside it, naming the container of treated water you have left, the line to fill to, and the warning that untreated tap water never goes in. A betta in a small heated tank has little margin, so these two written lines do more protective work than any paragraph of general advice.
Write the lid, light, and hands rules plainly
Write the lid, light, and hands rules for a betta in short plain lines a carer can follow half-asleep. Lid back on fully after every feed and check, because bettas jump. Light on the timer as set, and if there is no timer, the on and off times written out. No sprays, candles, or cleaning products used near the tank. Hands washed and well rinsed before touching water or equipment, and nothing that has held soap goes into the tank. These read as fussy on paper, yet each one answers a real holiday accident, and a carer following a written list never has to guess which precautions were genuine and which were small talk.
Write the never list and sign it with examples
Write a never list for a betta's holiday care and make it specific to your fish. Never add another fish, snail, or plant as company. Never change all the water or scrub the filter clean. Never move the tank, leave a mirror against the glass, or feed treats and foods meant for other pets. Where your betta has a personal quirk, write it as a reassuring example: he flares at the red mug, she ignores the first pellet and takes the second, he sleeps draped over the broad leaf by the filter. A carer armed with your fish's normal oddities will not mistake personality for illness, and will save their worry for changes that deserve it.
Write the call-me section with an order and a threshold
Write the call-me section of a betta's instructions with an order of contacts and a clear threshold. List the changes that earn a same-day call: food refused at two feeds running, lying on the bottom or hanging clamped at the surface, fins looking torn or edged with fuzz, cloudy water, or a heater or filter found stopped. Put your number first, a backup person second, and your aquatic shop or vet third, with permission to send a photo before taking any step beyond checking plugs. Leave the sheet at the tank, not in a drawer, and storing the same instructions in KinsLe through Care Pass means the betta's routine and key details stay open to the carer for the holiday and no longer.