Tokays should be kept in pairs. An exception to this rule may only be successful if several juveniles of the same parents are raised together and accommodated in an adequately large terrarium. A terrarium measuring about 80 x 60 x 100 cm
(width x depth x height) is sufficiently large for a pair, but a larger tank is always of advantage. Tokay geckos have a homesite fidelity to the extreme. Once a pair has adjusted to a certain terrarium and started reproducing regularly, it will respond with showing signs of feeling unwell and the female will stop producing eggs for months on end if they are transferred to another tank, even if it is larger and therefore appears to be better suited! If you begin with keeping wild-caught specimens from the pet trade, you should expect that the Tokays will need up to two years to become used to each other and the new environment. It goes without saying that the female will not produce any eggs during this period of adjustment.
The walls of the terrarium can be lined with cork bark, plaster, cement or even raw natural wood as Tokays appear to be not choosy at all once they have adjusted to what you have selected. Broad pieces of cork or other bark that are mounted so that they create hollow spaces beneath create the required shelters. A water bowl should not be wanting even though Tokays do not normally drink from it, but much rather use it for defecating.
The bottom substrate may consist of potting soil or a mix of peat and soil. The interior of the terrarium should be misted every day or at least every other day, and the water used for misting should be fortified with a vitamin supplement about once every week.
Fluorescent tubes with an adequate output (which depends on the size of the tank) are sufficient for the illumination of the terrarium if the entire upper face of the tank is made from mosquito mesh, because Tokay geckos are not particularly fond of basking. Alternatively, lighting the tank with CDM TC spotlights with an output of 35 Watt has proven to be adequate.
Temperatures should lie between 25 and 29°C during the day and decrease slightly at night. While Tokays can tolerate ambient temperatures of up to 35° C, values like that must not become the standard. Reducing the period of illumination in length during the winter months and thus also decreasing the temperatures is recommendable and a must for specimens that originate from mountainous regions.