Here is the current information on their husbandry:
They are allowed 2-3 days of drying time in-between waterings.
Watered with dechlorinated tap water (TDS of 50, everyone around here uses tap water), the water is never allowed to make contact with the pings or stone while pouring.
They are open to the air at all times; I open my windows for about 30min - 1 hour at night.
They are kept on whole pumice stones in food-safe pottery bowls.
They are ‘fed’ the fungus gnats that live in my fish tanks and vivariums.
I do not know the exact specifications of the lights, but I used them successfully for my succulent collection for several years. They are also next to West-facing windows.
They all have healthy root systems and are very difficult to pull off once dead or dying.
They go dormant around early-mid summer, when our AC comes on,
and wake up around early September.
They are guarded by a small cat figurine named Mr. Wheeze.
The most recent victim was one of my first pings from approximately 2 years ago, a very healthy esseriana.