I would say I was in medium light, it dose sit in water though but only enough water to keep them moist. It grows like a weed it was a two growth plant three years ago in 9cm pot. I potted in to rock wool and now it's nearly filling a 1lt pot. My temps are similar but not so cool at night.
Hybrids I have No trouble with even with double dose of this species.
I get spike grow well then they hit about 2/3cm then that's it they just stall and it stay like that and the rest blasts but the spike stays green where it covers the buds.
I don't know if it's just a dud plant.
While I'm certain I have less experience with schlimii than Tom, I've found it to be pretty adaptable about light, water, and temperature but also variable in that each clone seems to have its own preferences about the growing environment. I've grown and grow a number of different plants over the years.
Some clones do not tolerate sitting in water very well, though I suspect it's mostly that they don't tolerate sitting in stale or poor quality water, but some are just fine with the typical swamp treatment.
As for light, they'll take anything from shade (Phal levels) to bright light (Onc levels). I tend to grow them on the shadier side because I like the appearance of larger, darker leaves. In higher light, the leaves will grow more grassy and pailer, and the spikes usually last longer and/or produce more flowers.
As far as temperatures, I wouldn't push it to extremes in either direction. They seem to handle warm summer temperatures without issue, but I've found that cool winter temperatures (down into the 50s and low 60s at night) causes them to stop growing & blooming. Otherwise, for me, schlimii seems to bloom at any time of year, regardless of temperature, basically whenever the latest round of new growths has matured.
I agree, though, schlimii hybrids are typically much easier to grow, much more forgiving, and often more floriferous.
