Brown root tips in Laelia

[Roberta]

I think you'll be glad you waited... When you see new root growth (so that any old roots that get damaged will be quickly replaced), that would be the time to repot if you still want to.

Epiphytic orchids (which describes nearly all that you are likely to be be growing) definitely play by a different set of rules. Because they have evolved to grow on trees and tree branches with their roots exposed - in places where humidity is high and it rains a lot - they really want "humid air" more than "wet" around their roots. The "air" part is really important. But if you visualize these plants growing on a tree, their behavior makes more sense. It rains, then the sun comes out. Roots go where they want - to hang on, or to capture the water and air that they need. Also, since they grow slowly, they need very little fertilizer, too little might slow the growth a little but too much can be deadly.