Modular Mesembs (and friends) display tank
I've been wanting to display all of my extreme drought tolerant plants together for a while, but with how sensitive they are to over watering, a traditional community bed probably wouldn't be a great idea. So I came up with this modular, Gridfinity-based approach that lets me plant them in individual pots, while using a thin layer of gravel to make it look like they're all in one bed. This way I can thoroughly water each one exactly when it needs it and not worry about over watering its neighbors.
The bottom of the pots is a mesh so I can heavily water and it'll drain right through into the collection area at the bottom of the main tank. I can then drain the main tank with a siphon through the column in the upper right hand corner.
Some other benefits are that the pots can be very tall and narrow, which lithops especially tend to appreciate, and I can swap pots around very easily without disturbing any root systems, making it easy to add new plants or remove ones that didn't make it.
The last piece is the massive grow light above, a 100W mars hydro that, at full power, can deliver up to 1000 umol/m^2 in the center, meaning these guys will never be light starved (although I have it turned way down to acclimate them and will likely never need to go that high).
Oh and there's also a pair of fans above blowing constantly across the tank to help dry the substrate faster after watering. The substrate is about 90% inorganic (pumice, lava rock, and turface) and 10% organic topsoil though, so it should drain and dry quite fast already.
I do have a few empty pots in there, so I'm planning on getting a couple more types of plants, maybe a faucaria, euphorbia obesa, or even something like a Dinteranthus pole-evansi. Most of these lithops came from the clearance section at my local Lowe's, so I'm not sure how they'll do long term, but I'm hoping I've given them a good enough home to thrive in.