Swordtail: gear and buying guides

🧴 Water care for a Swordtail: 22 to 26°C, pH 7 to 8

The Swordtail’s water: its real parameters

For a Swordtail, water quality comes in numbers: 22 to 26°C on the thermometer, pH within the 7 to 8 window, nitrites at zero, nitrates under the 25 mg/L bar. A drop-test kit (NO2, NO3, GH, KH, pH) beats any strip — and the nitrogen cycle, three to four weeks before any fish, is non-negotiable.

Water changes and tank upkeep

10 to 20% of the volume weekly, with water pre-heated to tank temperature: thermal shock stresses more than imperfect water, gentle substrate siphoning as you go and filter media rinsed in tank water, never under the tap: chlorine sterilises your filter.

Health: what stalks the Swordtail

In the Swordtail, watch for: white spot disease after stress and shortened life from constantly overheated water. But the golden rule holds for the whole tank — nearly all disease starts in degraded water or chronic stress, and you ALWAYS test the water before reaching for medicine. Well kept, a Swordtail lives 3 to 5 years.

Quick answers

What water parameters for a Swordtail?

22 to 26°C, pH 7 to 8, zero nitrites and nitrates under 25 mg/L — checked with drop tests, not by eye.

How often should a Swordtail tank get water changes?

10 to 20% weekly, water brought to temperature, filter rinsed only in tank water. Consistency beats volume.

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🎾 Enriching a Swordtail tank: hardscape, shoal and occupation

Hardscape designed for its swimming zone

With a Swordtail, everything happens in midwater — furnish accordingly: structure the space with tall plants along the back, wood shelters and swimming lanes left clear. An aquarium’s enrichment is its hiding places and its currents — not fluorescent ornaments.

Group life: the first enrichment

From 4 individuals up, the Swordtail becomes itself again: hierarchies settling, displays, coordinated swimming — in small numbers it lives in chronic stress and loses its colours — group size is the species’ first “toy”, before any decor purchase.

Food as occupation

Turn every meal into exercise: frozen prey released into the current makes the Swordtail hunt, with the feeding spot moving day to day — foraging is its real “toy”.

Quick answers

How many Swordtail should be kept together?

4 minimum, more if the tank allows: it is a group species, and numbers shape its behaviour and colours alike.

How do you enrich a Swordtail tank?

Three levers: decor set to its zone (in midwater), feeding that changes form and place, and group numbers. The rest is marketing.

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🏠 The Swordtail tank: 100 L, hardware and start-up

100 litres minimum: why that number

For a group of 4+ Swordtail reaching 12 cm as an adult, plan 100 real litres — and remember a big tank is more STABLE, hence easier, than a small one: parameters drift slowly, leaving time to correct. This volume suits a sturdy standard cabinet — just verify perfect levelness.

Hardware: filter, heater, lighting

On hardware: a filter cycling the volume three to five times an hour, a heater around 1 W per litre set to 22 to 26°C, backed by an independent thermometer — built-in thermostats sometimes lie, and lighting on a timer at 8 to 10 hours a day: any longer and the algae win.

Substrate, plants and start-up

Nutrient substrate under fine sand or quartz, robust plants (anubias, vallisneria, Java moss) and wood to structure the territory. Then patience: a complete nitrogen cycle (3 to 4 weeks, nitrites back to zero) before the first Swordtail — the step every hurried beginner pays for dearly.

Quick answers

What tank size for Swordtails?

A real 100 litres minimum for a group of 4+ — below that, parameters drift too fast to catch.

Does a Swordtail need a heater?

Yes, about 1 W per litre set to 22 to 26°C, with an independent thermometer double-checking the thermostat.

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🧳 Transporting a Swordtail: bagging, acclimatisation, moving

Bringing home or moving a Swordtail

A double-layered transport bag one-third water, two-thirds air, slipped into an opaque bag or cool box: darkness calms, insulation protects from swings away from its 22 to 26°C comfort zone. Split the group of 4+ across several bags: less ammonia per bag, fewer losses if one fails.

Acclimatisation: the critical step

On arrival, float the bag 20 minutes to equalise temperature, then add tank water in small doses over 30 to 45 minutes, and release with a net without pouring bag water into the tank. In this species, a botched transfer is paid for in bouts of white spot disease after stress. Keep the light unit off until the next day: a freshly arrived Swordtail settles better in half-light.

Moving an entire aquarium

To move a Swordtail tank: occupants in covered buckets, filter media kept damp in a cool box — those bacteria are the tank’s real treasure — plants bagged wet, and a same-evening restart with as much original water as possible. The tank itself travels EMPTY: glass stressed by a few leftover litres cracks at the first corner.

Quick answers

How long can a Swordtail handle transport?

A few hours easily in a proper bag, up to 24 hours in an oxygenated professional bag. Past two hours, protect the temperature above all.

How do you acclimatise a Swordtail safely?

Float the bag 20 minutes, add tank water gradually over 30 to 60 minutes, release with a net, lights off the first day — and never pour bag water into the tank.

Outside our shipping area? The downloadable practical guide: Beginner axolotl: aquarium and care (€19)

🧰 Accessories for a Swordtail: tests, upkeep and budget

Water tests: your dashboard

The first smart buy for a Swordtail costs €15 to 30: the drop-test kit, out weekly for NO2-NO3 and at any doubt for GH, KH and pH. Then come the net sized for 12 cm, the substrate siphon and the dedicated bucket — never the cleaning one, whose detergent traces contaminate the water.

The Swordtail specifics

a battery backup air pump: at full stocking, a filtration failure is measured in hours.

The full budget, no surprises

An equipped 100 L setup (tank, filter, heater, lighting, substrate, decor, tests): expect €200 to 450 upfront, then €10 to 25 a month (food, electricity, conditioner). Second-hand often halves the tank price — only the filter and heater deserve to be new. Details on the full Swordtail profile.

Quick answers

Which accessories are essential for a Swordtail tank?

Drop tests, siphon, net, dedicated bucket, an independent thermometer: the whole kit stays under €60.

What budget for keeping a Swordtail?

€200 to 450 to set up an equipped 100 L tank, then €10 to 25 a month in routine costs.

In our shop, for this use: Stick-on digital thermometer for aquarium and terrarium glass (€18.90) · the whole shop

Outside our shipping area? The downloadable practical guide: Beginner axolotl: aquarium and care (€19)