Crushed coral ???

[firedave]

Does crushed coral substrate need to be replaced over time? I bought my tank from a friend three years ago. He had it up and running for about 6 years. I added probably about 3lbs a year ago. I am planning to make the change to sand here shortly. When I make the change will my parameter change greatly? Anything I should watch for? Thanks.

 

[littlebuck]

well look at past posts there has been alot of people changing in the past couple week I was one. There is a great post not sure where it was at but look back and im sure you can find it. Also i would change to sand if i was you. I had cc and now very happy with the sand.

 

[firedave]

Thanks!

 

[bovetek]

I started out with CC and had all sorts of problems with nitrates. After doing some research, I found out that CC was the main cause for my troubles. It's a detritus trap and causes nitrates to be high. As soon as I changed over to a sand bed, no more problems with my nitrates.
HTH

 

[stanlalee]

my crushed coral is 14yrs old and still in use. No nitrate problem (although it can be a problem if not set up accordingly).