Ludisia Discolor cuttings losing leaves

[dimithar]

Ok so I've had this plant for years - 4-5 maybe more. It bloomed the first two years, but it's always been sickly. Problem is it keeps creeping and grows very fast, but with every new leaf it drops the bottom one so it never has more than two or three leaves on a stem. I've tried regular media, orchid bark, clayish soil- same thing. Different light - no luck. At first I never misted them and only watered occasionally; now these cutting I mist three sometimes more times a day; with or without fertilizer I still get the same result. These cuttings originate from three [older] cuttings sitting in a jar of water for a year completely neglected (my failure was very frustrating). They were rather long (15-20 cm with THREE leaves on them ) so I cut them up into several pieces and put them in a shallow tray of bark mix. The bigger ones are the tips of the old cuttings and the smaller ones developed from the stem pieces. Big ones have 2-3 cm long roots and the small ones - 5-6 mm long ones. The problem with the leaves as you see is still going on - bottom leaf turns pink and dies. The glass tray is filled with a cm of water for additional humidity. I didn't want to post, because there are so mane threads for ludisia; I've read them all but I can't understand what I'm doing wrong. Maybe I should try planting them vertically? Last time I tried the stems rotted where they were submerged, even though they were in bark mix and were watered infrequently (too much so I may say )