Glass tanks are great for display and ventilation but do not hold heat and humdity well so it can be a struggle to hold those stats depending on regional and home temp and humidity. They can also take up a large amount of room so if you have limited space, this is ill advised route to take.
Racks are a great way to go if you don't care about whether the snakes are on display or not. They hold temp and humidity well and you can house numerous animals in a small amount of space. They also provide small spaces to create a secure home for the animals.
PVC cages are another option. They are similar to the cage you posted a picture of but made of plastic. They are light weight, hold temp and humidity well, and are very good for display purposes if you so desire a setup as such. These are stackable and you can house 2-3 times as many animals in the space(not enclosure) 1 glass tank would take up.
I'd recommend a rack or pvc cage for the direction it sounds like you want to go. Also, I have not heard of enclosures which hold contanimates which would promote bacterial growth. I'd say it would depend on substrate and how clean you keep your enclosures.
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