old live rock

I used to have a reef tank that I couldn't afford. I couldn't afford the correct lighting, water changes, correct filter, or the correct amount of live rock. Needless to say, that experiement didn't turn out so well and I had to break it down. When I did, I threw the live rock that I had in the backyard.

No, my economic situation has improved and I'm building a new reef tank. Although it has been several years, the rock that I originally had is still in the back yard. It's a bit dirty, but some of it still has the color from the coraline algea on it.

My question. Can I use this rock in my new tank as base rock?

 

Hi,
Welcome to 3reef!!!!
I wouldn't use the rock even if you boiled it to kill what ever is living in or on it. Don't start of on the wrong foot by using bad rock. Just start off by purchasing a few pounds to start off with of nice "cured" live rock at the LPS. It will help to "seed" your tank as well. I'd also invest in some live sand, either purchase it at your local pet shop or ask them for some to help start seeding your tank with beneficial bacteria to aid in cycling your tank sooner.
I don't know what you plan on keeping as far as livestock is concerned, or what type of saltwater tank you plan on replicating (REEF, FOWLR, w/Inverts), but I would do some research and and learn as much as you can about saltwater tanks and their inhabitants. Proper knowledge of equipment, livestock husbandry and compatability, proper water parameters etc. will aid you in setting up and maintaining a successful and enjoyable saltwater tank!

 

Ya I agree too risky