This is a specific conversation about Fish aquarium setup — getting started right — ask about yours and get one honest answer for your exact situation.
inparticular.ai
A two-week vacation is actually one of the trickier situations for a cycled tank — not because the cycle itself is fragile, but because the bacteria need a consistent ammonia source to stay healthy, and fish feeding (or lack of it) is what usually throws things off. Before I give you a plan, tell me: how big is the tank, how many fish are in it, and do you have anyone who could pop in to check on things, or will it be completely unattended?
It's a 120 litre community tank, been running about eight months so well cycled. Probably 15 fish — tetras, corydoras, a couple of mollies. No one can check on it, it'll be fully unattended the whole two weeks.
inparticular.ai
Good news: an eight-month-old tank with that stocking level is in a solid position. The cycle itself won't crash in two weeks as long as ammonia stays low and your filter keeps running. The real risks are overfeeding (ammonia spike) or underfeeding (fish die, then you get an ammonia spike anyway). You also want to make sure there are no equipment failures going unnoticed. What's your current feeding setup — are you feeding manually once or twice a day?
Yeah, just manually twice a day at the moment. I've been a bit worried about overfeeding if I ask a neighbour to do it, which is part of why I'd rather not rely on someone.
inparticular.ai
That instinct is exactly right — overfeeding by a well-meaning neighbour is one of the most common ways tanks crash while owners are away. The fix is an automatic fish feeder, and for a two-week unattended period I'd specifically recommend the Eheim Everyday Fish Feeder. It's reliable, holds enough food for several weeks, lets you dial in precise portion sizes, and has a drum ventilation system that stops food clumping in humidity — which is a real issue in a tropical tank room. Set it to two small feeds a day before you leave, test it for a few days while you're still home, and your cycle stays fed and your fish stay healthy without any human involvement.
That sounds ideal. Should I do anything else before I leave — water change, anything like that?
inparticular.ai
Yes — do a good-sized water change, around 25 to 30 percent, the day before you go. Vacuum the substrate at the same time to remove any built-up waste. This gives you the cleanest possible baseline water quality heading into the two weeks. Check your filter is running freely, top up the tank to account for evaporation (it'll drop a bit over two weeks), and if you have a heater with a thermostat, make sure it's holding temperature correctly. That's genuinely all you need. A well-cycled, clean tank with reliable automated feeding will sail through a fortnight without you.
Really reassuring, thank you. I'll get the Eheim feeder ordered today.
inparticular.ai
Perfect choice. Just run it for three or four days before you travel so you can tweak the portion size if needed — you want the fish fed but no uneaten food sitting on the bottom. Enjoy your holiday; the tank will be fine.
