Fine Sand over Crushed Coral Bed?

[dale77]

Any one put fine sand over a crushed coral bed or crushed coral over a fine sand bed? I was wondering if the sand would migrate down or up over a period of time? Also, anyone ever try the black fine sand before? I would like to see a photo of it if anyone has one...:huh:

 

[skriz]

dont mix cc with sand. do a search, there was a thread that addressed this recently.

black sand looks cool, but it wont buffer.

 

[piznac]

I have a layer of crushed coral under my medium grain sand,.. seems to be working out fine. Can I get a link to that thread,.. or I suppose I will search.