Originally Posted by odle57
It is just a really neat rock that I found behind a house while at work. Don't really know what kind it is. I will bring it home and get some pics up.
Thats what I was wondering. While I do have to confess that I have put rocks taken from around the area into my freshwater cichlids tanks, I would never consider doing so with my saltwater reef tank. As Kurt said, too much risk of something leeching into the water, and I have way too much invested in the tank to even consider it.
To answer your original question however, about base rock turning into LR
; I started my 65 gallon reef tank in early December of '07 (Tank #7, by the way) using GARF's man-made rock (completely dead). I "seeded" the tank using some LS
(from a fellow hobbiest), and three small pieces (smaller than the palm of my hand) of LR
By Mid January, my cycle was complete; I had bacteria:
This is what it looked like in April of '09 (four months):
This is what it looks like now (14 Months):
. . . so the answer to your original question is yes, base rock will become live (over a period of time). That said, however, I must again caution against using non ocean based rock. HTH