[@marko@]

im guessing you didnt add any fertz?
yeah, that will do it. i used the dyana grow from blackjungle.com. its supposed to be good (you dont need a lot of fertz though, the rainforests have very little nutrients, so you dont want to add too much or the plants will get nitrate posioning and such). just use as prescribed.
also, you should water with distilled/RO water. especially the airplants. they dont like having a lot of minerals in the water.