Housing a Red-eared slider: 120 × 50 × 50 cm, 30-32°C basking
Red-eared slider : An aquaterrarium of 300 L or more for an adult, water at 22-26 °C, a dry basking platform under a heat lamp (30-32 °C) and a UVB tube. A secure outdoor pond in summer is an excellent addition, but never release the animal into the wild.
An accessory from our shop for this use: Stump-effect resin islet and hide for young aquatic turtles (€21.90) · the whole shop
We don’t ship products to your country yet; our practical guide downloads anywhere: Your First Terrarium: Leopard Gecko, Bearded Dragon, Corn Snake, Ball Python (€15)
In short: 20 to 30 cm of shell as an adult, 30 to 40 years of lifespan, intermediate level. Lively and voracious, it swims actively and proves far more demanding as an adult than at the time of purchase. It is aquatic: it needs an aquaterrarium of 300 L or more, oversized-filtered water at 22-26 °C and a heated dry basking dock under UVB — never a plain water tub.
120 × 50 × 50 cm and a strict thermal gradient
For an adult Red-eared slider: 120 × 50 × 50 cm minimum, with a basking spot at 30-32°C and a cool zone at 22-26°C. That gradient is not comfort: it is how a reptile regulates temperature, by moving. No cool zone means overheating; no hot spot means no digestion.
Heating, UVB, humidity: the technical trio
Heating ALWAYS runs through a thermostat — the least negotiable equipment in herpetoculture — with thermometers at both ends. On light: a UVB tube (10-12 rating for desert setups, 5-7 for tropical) spanning a third of the enclosure, replaced every 6 to 12 months even if it still lights up. Humidity held at 60 to 80% via misting (manual or automated) and the right substrate, checked with a hygrometer, not by feel.
Substrate and layout
Most of the volume is a filtered, heated water section plus a dry basking platform under the lamp: oversize the filtration — an aquatic turtle pollutes like ten fish. Place the enclosure out of direct sun, which would turn the volume into an oven despite the thermostat.
Frequently asked questions
What enclosure size for a Red-eared slider?
120 × 50 × 50 cm minimum for an adult — sized for the adult from day one; a juvenile does fine in it with extra hides.
What temperatures for a Red-eared slider?
Basking spot at 30-32°C, cool zone at 22-26°C, all on a thermostat with a natural night-time drop. Humidity sits at 60 to 80%.
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