Dendrobium rhodostictum questions

[Becca]

Hi Everyone! I have a few questions in regards to growing Dendrobium rhodostictum. I purchased one a little over a year ago and transfered it to s/h culture when I received it. It seemed to take right to it, it has grown several new growths since. My questions are:

1) I was told to let it dry out between waterings but I have also read to not let it dry out and always keep it moist, so which does it need? Is s/h perhaps not a good choice for this one?

2) I also read somewhere that it is a mistake to water from the top down when it is putting out new growths but didn't say why, whether in a regular potting medium or a s/h culture, how else are you supposed to water it and why is it bad to water from the top down during new growth?

3) It grows in high light, high humidity, and intermediate temps, and it still seems to dry out quickly and every leaf so far has turned brown starting at the tip and eventually falls off, but the p-bulbs are fine looking, why is this?

I have had a hard time finding info on growing this particular orchid, so any help will be greatly appriciated.

Also, I almost thought of pulling it back out from the s/h culture because the roots closer to the top of the surface seem to be very dry and brittle looking. But upon inspection of the roots, they seem to be ok, not the best, but ok.

Can some one please help me or tell me what I am doing wrong?

TIA!