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The Arboreal Glass Towers
Enclosures, Shopping Notes & options

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The "Arboreal glass towers" are for species that do not require substrate (otherwise, they should be considered semi-arboreal species). Such live mainly in tall areas like tree cavities, plant leaves, branches or foliage. Ample ventilation simulates the airflow above ground. Some spiders build hammocks or webs on the top surface, side door or wall, corner or crevice, etc. Therefore, having multiple ways to open the enclosure is essential; the glass tower opens from the top, sides and bottom. Pet jumper spiders fall in this category, making this enclosure style the best fit. The shopping notes on this page will help you decide what style fits your pet spider more. 

TIP: We have a guide that helps determine what kind and size of enclosure setup you need; head to "the spider enclosure size and style guide."

Arboreal Glass Tower - Plastic Vnetilated Top - 3.jpeg

What is the difference between the two arboreal towers, standard vs light?

The bottom section and ventilation placement are different, the standard edition features a tray for substrate, and the light edition features a slim, fully ventilated plastic bottom.


Wait, what? Substrate tray! But arboreal species like jumping spiders don’t require substrate; let’s clarify, the tray is not for burrowing substrate but ideally for inert or inorganic materials that absorb water to create a humidity buffer. The tray is detachable, so this media can be replaced often as needed to remove droppings, waste food, mould, etc. For example, coconut fibre, moss, coarse sand (no dust), wet cotton, or paper towels can be changed easily. The standard enclosure is best for species that need high ventilation, have high humidity requirements, or are located in areas with dry air. Furthermore, the humid air rises from the bottom and helps generate cross-ventilation utilizing the stacking effect (read more on the “enclosure size guide.”)


The light edition is best for species that need more airflow. Humidity in the enclosure is directly related to the environment outside the enclosure, so either control humidity in the area around or provide water by occasionally misting with a spray bottle, watering jars or dishes,  wet cotton or paper, etc.

Ventilation, why lines instead of holes:


We are so used to seeing cross ventilation in the form of holes on opposite sides of acrylic enclosures; this works well, especially with acrylic, as drilling holes is much easier than making precise thin lines. 3D printing technology allows us to make such lines relatively easy. Using thin lines also means that spiderlings or fruit flies won't escape.


The big question is; do lines provide more ventilation? Yes.

Fruit fly inside jumping spider enclosure

Let’s do some simple math with a 10x6 cm enclosure wall. The rear panel has ten ventilation lines from top to bottom measuring 9cm long and 0.5mm wide; let’s calculate the open area by multiplying 90mm times 0.5mm = 45 cubic mm of ventilation area per line, and for all ten lines, that is 450 cubic mm of area. A typical hole in an acrylic enclosure measures 1mm in diameter, so Pi times the radius squared = 0.79 cubic mm of open area per 1mm hole. If we divide 450 by 0.79 = we get 576. Therefore, you would need 576 holes to have the same ventilation area. The standard edition also features three lines on the bottom of each side, allowing air to enter from the bottom and move all air through the back. They may seem like not much but let us do the math; the open area of such three lines is 3 x (90mm x 0.5mm) = 270 cubic mm per side, equivalent to 341 holes on that little wall. The light edition ventilated bottom has the equivalent of 598 holes, which can also be used to ventilate the top. 

Cross ventilation happens when air enters one side of a contained space and exits through a different point in the enclosure while forcing all air inside to move and exit, meaning there is no standing air. However, just because ventilation is placed on two relatively small opposite sides of a container does not mean all air inside flows everywhere; top and bottom locations are also crucial. Our enclosures use the higher efficiency of ventilation lines combined with great strategic placement to maximize airflow. 

Top section of jumping spider enclosure showing ventilation lines

Differences with the Duo & Tri glass spider enclosures:

Simple; the “duo and tri glass spider enclosures” are meant to use substrate and do not have a removable bottom. It is meant for species that need substrate to burrow or catch prey. For example, many arboreal tarantulas require a substrate, even if they have arboreal behaviours.


The duo & tri enclosures can be customized long, wide or tall, with different proportions and many more size options vs the towers. This is because there are many more terrestrial species with different needs than only arboreals. The duo & tri enclosures can also house a pet jumping spider.

The arboreal glass towers deploy ventilation from a bottom to top flow, and the duo & tri enclosures depend more on the air entering through one or two sides and exiting through the top lid. The top lid has a ventilated rim and a removable glass portion.

The arboreal glass towers have a removable bottom, giving more service access and the option to clean the bottom surface often.

Head to the product page for more details; if you have further questions or need assistance, there is a chat on the contact page.