The classroom received a gift of 3 Dinitidula x pulchellas. *I think they might be a Drosera. I'm not exactly sure. *I did an Internet search on them and found no information. *Perhaps I have misspelled the word Dinitidula? *I did find information on a D. pulchella. *Either way, the teacher has been gone from the classroom since last Friday morning and will be gone this entire week... the plant babies are mine to care for until next Monday. I need help on the little Dinitidula x pulchellas as two of them are looking dead and the 3rd appears to be rapidly departing this world. *We have them in a mix of 50/50 sphagnum peat and sand. *There are little bits of LFS on the top of the mix around them. *They are in 3.5" pots on drip trays. *The pots and drip trays were placed in a deep pebble tray that has been filled with distilled water. They have been watered with only rain or distilled water and were never allowed to dry out. They are covered with little clear and vented cups to retain humidity. They were getting at least 6 hours of sun a day.*What did we do wrong that killed 2 out of 3 of them. These were a gift and I'd like to try to sort out and reverse what ever I did wrong and save the last one.