Wintering and dormancy with S-H/LECA culture

[Houston]

All of my orchids are in s/h. Blc. Maikai and Cattleyas are flourishing after 3 Houston winters on porch. Lows down to 33 without evaporative cooling. Dendrobium Abberans old growth has survived but new growth going into dormancy died. All other cane dens I've tried to winter in sh have died due to rot. Guess I won't be growing them on my porch as I refuse to grow in anything but water and have 800 sq ft apartment with glass door as only window.