So last night I put the 120# of live sand in my new 75 gallon. Its looking good slowly clearing up the cloudiness and the filter is working great. I originally thought I would use live sand and crushed coral so I had also ordered 80# of coral. The 120# looks like plenty already. So obviously there is only one thing to do.....I NEED another tank! (I know that's what you were thinking too.) If I set up another tank using the 80# of crushed coral, about what size of a tank would I want? I am considering a corner back tank or a regular shaped tank. Ideas? Another question to add. Would it be a good idea to still use some of the crushed coral along with the sand to buffer the water in the 75? It will be FOWLR tank. Thanks!