03/11/2026
🎄 Thinking of getting someone a fish tank for Christmas? Now’s the time to think about getting started! 🐠
Christmas might still feel a little while away, but if you’re hoping to have a beautiful aquarium full of fish ready for Christmas Day, it’s important to start planning now!
Why so early?
Before adding fish, a brand-new aquarium needs to go through something called the nitrogen cycle.
This is the process of building up beneficial bacteria in your filter that help break down harmful waste produced by fish. Without these bacteria, toxic ammonia and nitrite can quickly build up in the water, potentially making your new fish very poorly or even killing them.
How long does this take?
We generally recommend allowing around 2–4 weeks as a starting point, although some aquariums can take longer. Every tank is different, and the water needs to be tested to make sure it’s safe before adding any fish.
Can I just add fish straight away?
Unfortunately, no! While you might hear about cycling a tank with fish already inside, this can expose them to harmful levels of ammonia and nitrite.
At Repxotics, we recommend fishless cycling, allowing your aquarium to establish its beneficial bacteria before introducing its first inhabitants.
🎁 So, what if you’re buying a tank as a Christmas present?
You’re more than welcome to purchase an aquarium closer to Christmas, but please bear in mind that it won’t be ready for fish straight away!
If you’re hoping to have fish swimming around on Christmas Day, we’d recommend getting your aquarium set up and cycling as soon as possible.
Not sure where to start? Pop into Repxotics and have a chat with us! We’re always happy to help you choose the right aquarium and explain how to get it ready for its future inhabitants.
A little preparation now means a much happier, healthier aquarium this Christmas! 🎄
