Hacker Timesnew | past | comments | ask | show | jobs | submitlogin

Terminology pedantry since I recently got in "jarrariums" and have been reading a bunch...

Most terraria are not sealed, so while we've been making them forever, that doesn't say much about the viability of sealed ones. As far as I know, research into closed ecosystems didn't start until the 20th century.

If it has fish in it, it's not a terrarium. Terraria are land-based (hence the name). Think garden in a box. The main thing a terrarium gives you over simply potting some plants is that it can increase the local humidity. Also, you can have animals in it (usually invertebrates that eat detritus), which helps it be lower-maintainance.

If it's full of water, it's an aquarium (again hence the name). Most aquaria today don't have living plants and only have animals. That requires mechanical filtration and oxygenation to replicate the side of the ecosystem that plants normally occupy. A "planted tank" is an aquarium with live plants in it. When balanced well, they can be lower maintainance because the plants and animals provide things the other need.

If the box is half-submerged with both aquatic and land-based life, it's a "paludarium".



Consider applying for YC's Summer 2026 batch! Applications are open till May 4

Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact

Search: