How to water frequently without drowning the roots

[rbarata]

This is most effective with low HR, the lower the more effective it will be.
It might not be very aesthetic but works in my conditions. I have difficulties growing Oncidiums and Zigos (they grow but not vigorously) 'cause in summer their leaves start to curl due to the dry air. Water trays are not enough (I don't know if they do anything, really) so this is an additional help.