Kovachii care vs. the other ones.

[Optimist]

Hi everyone! I have expanded in other directions, plant wise, and so I do not have as big a collection as before. I have mostly paphs and phrags now, as well as a tiny hamdful of other orchids.

So, I have tried twice now to grow Kovachii just like my others-- semi hydro, and to tell the truth, so far, the Kovachii hybrids are not going for it. I am trying to figure out what I am doing wrong because I just got a hybrid, La Vingtaine (which I killed previously) and a species Kovachii. According to the seller they are mature-- and I know La Vingtaine was also very large.

I water only with RO or rain water. I keep the resivoir filled. I water often. I feed very sparsly with K-lite. Since I use lecca I do not often change the medium so I don't move the plants around much.

How do you grow Kovachii?