Water Culture... what does it actually involve?

[RosieC]

I've read about a lot of people who have had success with using water culture to revive a rootless orchid, but after searching I can't find details of what you actually do.

This orchid has been rootless since mid December. I've kept it with the end of the stem in water and the leaves are suprisingly strong for a chid with no roots for that long. Ocasionally it has got knocked and no longer been in the water and then it's leaves got weaker, but strengthened again after going back in the water.

So is this all I do, leave the end dangling in water? I kind of thought there was more too it, like needing alge or something (no alge has grown).

No roots have grown, not sure how long it would take if they were going to.