Ill end up using this thread in a cycling thread written for the new tank keepers, your live rock yields further detail, its the nicest Ive seen that still had living benthics on it.
sure others have seen better but Im landlocked here near Amarillo and that for us would be the nicest. mostly we just get plain purple. never seen an embedded hitchhiker trachyphyllia in 15 yrs online reefing. we normally have to pay fifty bucks for that.
In our cycling thread we talk about two typical kinds of rock for a new tank, one is gray and has no verifiable bacteria, and the other has coralline and life forms on it and certainly does. We know the presence of filtration bacteria where coralline algae is seen, by rule and not by exception, so its fun to infer various things about live rock solely off pics and it doesn't look like we're way off base so far
Your live rock is a third form in that it surpasses simple coralline rock to include such animal diversity that having free ammonia around that live rock is bad, not good, and we want to keep ammonia at zero in a tank housing that kind of live rock. You have a type of live rock that is referred to as uncured, but not for lack of bacteria. Its carrying animals expected to die when transitioned long term into a marine tank, and your ideal goal is arresting that process and finding the feed and procedures that keep that rock looking like it does, with some unidentifiable animals on it, diversity, vs just going to all purple no diversity.
This type of rock above represents something opposite we commonly think about tank cycling, that we must add or support bacteria each time we bring rocks home,
not the case here. Most common cycling is about adding bacteria to barren rocks, but see these pics above...nonbarren, and all the bacteria arrive better loaded and more diverse than our tanks will support.
We don't have to add bacteria to these rocks above, nor provide direct food to keep them alive, the rocks alone in a nonfed tank would support nitrifiers via slow dieoff for X no. of years, the bacteria are that firmly seated.
we have to change water enough or negate the ammonia leaking so that other benthics wont die from that, which might normally live.
This kind of rock is actually put into a tank and the ammonia is attempted to be kept low to zero, the reverse of typical tank cycling where we use a dead rotting shrimp. The rot here is coming from the animals on the rock and it feeds the inherent bacteria.
Your rock is a fine example of when we do the -opposite- of typical tank cycling, keep ammonia out at all costs and wait for the death phase to stop, that's when its time to reef. In your case, the pics indicate this live rock was handled pristinely and came to you in great condition
I know you didn't ask about any of this im just typing the details we can review off simple pics and no test kits, and because its in line with our cycling thread which is here:
http://reef2reef.com/threads/new-ta...d-cocktail-shrimp-live-rock-no-shrimp.214618/