First post here. I've been in the hobby for 30+ years but now I'm finally getting serious. I haven't had a saltwater tank since the early 90s. How things have changed! I had moderate success before but this time I would like to do better. I have read and researched till my head is spinning. I've got an Ro/DI unit, protein skimmer, pumps, lights etc. and am in the process of building my sump out of a 10 gallon aquarium. This will be used on my 30 gallon saltwater tank. I'm thinking FOWLR. Here's my question- I have a ton of old white coral that we used in the old days. Can I use this for a base and add some small live rock to it. I haven't been able to find much info on this. Any help will be greatly appreciated. Sorry I wrote a novel. Thanks.