Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
Thanks for reply.Any fine sand will do. Crushed coral would be a no go. I would recommend caribsea special grade (but I personally use their oolite sand).
A word of warning though, black cucumbers are more toxic than other cucumbers. Unlike some cucumbers who release sticky tubes as a defense mechanism, Black Sea cucumbers skip straight to shooting toxic red liquid, and their (also toxic) organs, into the water.
So with that in mind, I would have a deep sandbed. At least enough for the cucumber to bury itself. And I would stay far far away from from crabs or fish which may bother the cucumber or shift the sandbed.

