no need to do it this way. I compared sand versus tap water and tap water works better. Take you cuttings and let them sit in a cool dry place for 2 weeks so they can scab up. Put them in an inch or two of water, in a clear container. Just change out the water once a week. Put cuttings on a windowsill. This is the easiest way, and I've done it for 10 years.
In 2008, I got a little sprout in Syria, unfortunately they didn't know its name, but it was inside the apartment and it's beautiful. I found out his name after 14 years, thanks. It bloomed for me once indoors and it is quite stunted because it froze once, but it is alive and now I trust that I can give it new life. I am thankful.
Keep the sand or sandy soil just damp, these plants do not like to be over watered...they get lots of moisture from the surounding air...if they are in a humid area thats best, if not just keep the soil slightly moist, or just mist the leaves
This isnot the queen of the night, many confuse it, the queen of the night is the Selenicereus grandiflorus, it has thorns in the branches, The one you have is epiphyllum, they spring even during the day, the grandiflorus only one night in the year
the sand is just slightly damp, these plants do not like to be kept wet...they get moisture from the air, so misting the leaves is also good for them....they like light soils that have some sand in them.
