Start a first-time betta briefing with feeding limits
Feeding limits come first in a first-time betta briefing because overfeeding by a kind sitter is the commonest holiday problem. State the exact food, the exact amount per feed and the times, and say plainly that the betta will beg and must not receive extra, however theatrical he looks. Explain that uneaten food should be removed rather than left, and that a missed single feed is far less serious than repeated double feeds. If you can, pre-portion each feed into a labelled container for the days you are away, which removes judgement from the task entirely and protects water quality while you are gone.
Heater, filter and lid: the tank facts a carer needs
Tank facts a betta carer needs are the heater, the filter and the lid, explained as daily checks rather than technical lectures. Show the sitter the thermometer and the temperature range you expect, and what to do if the reading sits outside it, starting with contacting you. Explain that the filter should run continuously and its hum or flow is normal, and that it must never be switched off to quieten the room. Stress that the lid stays closed because bettas jump, and that no sprays, scented products or soap-cleaned items go near the tank, since residues that seem trivial on land can harm a fish quickly.
Water changes and what to leave alone
Water changes for a betta should be described to a first-time carer as either a task with steps or a task to leave entirely, with no middle ground. If you want a change done, write the amount to remove, how replacement water is prepared and matched for temperature, and which of your labelled containers to use. If you would rather the carer only tops up evaporation, say that clearly instead. Also state what to leave alone: rearranging decor, scrubbing algae from every surface, or adding any product you have not listed. A confident sitter improvises, so a good briefing removes the need to improvise in the first place.
Normal betta behaviour versus a reason to call
Normal betta behaviour needs describing because a first-time carer cannot judge a fish they have just met. Explain that flaring at a reflection, resting on a leaf near the surface, and building a raft of bubbles are ordinary sights for many bettas, and that long fins make swimming look effortful even when the fish is well. Then name the call-you-at-once signs in plain terms: refusing food for more than a brief spell, staying clamped and still at the bottom, torn or rapidly shortening fins, white spots or fuzzy patches appearing, or the heater or filter stopping. Give your phone number and a backup contact on the same page.
Leave the briefing where the carer will use it
Leave the betta briefing printed beside the tank and sent digitally before the first visit, so the carer can read it at home and again at the glass. Walk through one feed together if distance allows, or record a short demonstration on your phone showing the amount in your hand. Keep the written brief to one page for daily use, with your fuller notes behind it for reference. Handing that packet over through KinsLe using Pet Passport lets a first-time betta sitter carry the routine, tank checks and warning signs with them instead of relying on memory.