Reptiles & Amphibians

Turtle trays and the glass tank that replaces them:

a water turtle spends almost its whole life swimming, and the shallow plastic tray it came home in is sized for a hatchling, not for the plate-sized adult it becomes. The next home is a glass tank with deep water, a dry platform to haul out on under a basking lamp, and a filter far stronger than the tank’s size suggests, because a turtle fouls water much faster than fish do. That is why canister filters and large tanks from aquariums so often end up in turtle setups. A used turtle tray is nearly always being passed on because it got too small, not because it wore out. A grown land tortoise lives best in a dry outdoor pen with a warm shelter, which leaves its indoor terrarium spare.

Glass terrariums, wooden vivariums and the animal each one suits:

buy for the adult animal, and pick the box for the climate it needs. A front-opening glass terrarium with a mesh top is the all-rounder: lamps sit on the mesh, and the animal is reached from the side rather than from above, which most lizards tolerate far better. A wooden or melamine vivarium holds heat well and suits dry-country animals such as leopard geckos and bearded dragons, which want a long, low space with a hot end and a cool end, but damp ruins it, so it is the wrong choice for frogs. Frogs and other amphibians want glass, humidity, plants and drainage under the soil. Snakes need less floor than people expect and a lid or doors that lock, because a snake will find any gap a sliding panel leaves; an escaped one usually ends up in animals lost and found.

Heat mats, ceramic emitters and basking lamps:

each warms a terrarium in its own way. A heat mat under one end gives a gecko a warm floor without lighting up its night. A ceramic emitter throws heat but no light, so it can run after dark. A basking bulb makes the bright hot spot a dragon or a turtle climbs under, and anything that basks also needs a UVB tube or bulb, which an ordinary household bulb cannot stand in for. Whatever produces heat should run through a thermostat, and any lamp inside the enclosure needs a wire guard so the animal cannot lie against the bulb.

A used terrarium is judged at its doors, lid and wiring:

open and close the front doors several times and see that they still meet and lock, and that sliding glass runs in its tracks without leaving a gap at the end. Press on the mesh top, since rusted or bulging mesh is how snakes get out. Look along the base of a wooden or melamine vivarium, which swells and peels wherever water has got in. Turn a heat mat over for a brown scorch patch or a kinked cable, and ask whether it always ran on a thermostat. To test the thermostat itself, plug a lamp into it, turn the setting down, warm the probe in your hand and watch the lamp go off. Scratches on the front glass are cosmetic; a crack is not. Whatever you take home gets scrubbed and disinfected before anything lives in it.

Passing on a terrarium and its heating:

list the inside measurements, the material, whether it opens at the front or the top, and exactly what goes with it: thermostat, lamp domes, guards, background and décor. Photograph it set up and running with a thermometer in the shot, and add a close photo of the heat mat and the plugs. Say whether anything was ever used with a sick animal. Before a buyer drives in from San José Pinula or out to Sanarate, empty out the sand or soil: a glass terrarium lifted with its substrate still inside is how bases crack, so it travels empty, standing on its base, with the doors taped shut.