i did crushed coral for about 8 months and switched with a DSB with LS. I did the change while moving (seemed like the perfect opportunity).
Go with the DSB of LS, or as much LS as you can
![Wink ;) ;)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
good luck!
oh, just in case you ask later ...remove all the crushed coral because if you just put the live sand on top, eventually the crushed coral will reach the top. especially if you have a clown!
take my word on it
![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)