hmm...

[daddyyankee]

whats the difference between the coral and the sand aside from the looks?

 

[sunfish11]

Hmmm...weird question...Umm the coral is an animal and the sand is, well, sand. Sorry if I seem sarcastic I am just not sure what you are driving at here.

Lisa

 

[frankrip]

I think he means crushed coral.

 

[sunfish11]

oh, duh.

 

[snulma1]

Crushed coral is more coarse and provides more places for trapped food and detreius to rot and cause a spike in your nitrates. Where is sand doesn't allow that to happen as much.