The aquarium is usually glass so that we can see the terrapins swim and play.
For every 1cm of shell length a terrapin needs 100cm2 of floor space.
Fill with water at least as deep as the largest terrapin is wide.
The tap water must be treated to remove chlorine.
A water filter must be fitted to remove waste.
A water heater must be fitted to keep the water between 24-28C in daytime and 21-25C at night time, using a thermometer to check.
There must be two light sources, one UV light and one Spot light for basking at 30-35C. These can be bought separately or as a combined fitting.
Terrapins need a haul out area, which can be a ramp fitted in the aquarium, or made from stones that gradually increase in size to allow the terrapin to crawl out of the water. The hot spot should be over this area.
Bark or plants should be added for shade.
Do not have the aquarium close to heaters or direct sunlight.