I have 2 Vandas, regular ones. One is growing OK, and flowering regularly and growing new roots. The other one I bought in May, and since that time it lost at least half of its roots and has grown smaller flowers than usual. The roots are drying out and die. The two Vandas are hanging in the air and getting enough light, but they are in the house where the air probably kind of dry. So far we soaked them for half an hour every 3-4 days and gave them a shower 1-2 times a day. We use tap water for that. I would be interested to know what should I do to save the one that is loosing its roots. What is the succesfull way to keep Vandas in a normal home? Is it better to soak them every day instead of giving them a shower? Is the tap water the problem? (If that is the problem, then what kind filtering machine could be used? Reverse osmosis type filtering, or some other? For me it is not easy to collect rain water. I could take water from a little lake in the garden, but I don't know if that is enough clean for that. ) Please advise.