Oh no don't be sorry its not you its me. Just between the whole cycling thing and now this i am so lost. I will figure it out eventually just hope my fish wont die.
Maybe a quick explanation of how things stay balanced will help?
1-Ammonia is created from decaying organics.
2-Bacteria exist that eat this ammonia and poops out nitrites
3-Other bacteria exist that eat the nitrites and poop out nitrates
4-Still other bacteria exist that eat nitrates and poop out nitrogen gas
Anything within the marine ecosystem will become populated by bacteria that do all of the above. (Mine #4, those are a bit different and more rare)
All live rocks are, are objects that have a lot more surface area than others for holding the #1-3 bacteria. If you buy rocks that are dry, then none of those bacteria can be alive as they need water and food (ammonia, and nitrites) to live. If you buy rocks that are from a running system such as the ocean, then they are going to be populated. The bacteria will wind up on everything in the tank including rocks that were dry when added.
When you are cycling your tank, all you are doing is waiting for (and providing) the right conditions such that #1-3 bacteria can form to process anything that decays. (Poop, uneaten food, dead animals, ect).
So when mr fishy poops, he doesnt sleep in it.
At the end of all this pooping (fish and the #1-3 ) you are left with nitrates. Eventually some bacteria will form to to turn the nitrates into a gas. (Some here are so elite that they do this efficiently
)
Now that you see how live anything processes your fish poop...
Base rock is usually dry rocks (no life, needs a bacteria source) but can also be trashy live rocks that people tend to bury in the sandbed and use as a foundation for their super spiffy rocks to sit upon.
Live rock:
1-Uncured: full of decaying whatnot
2-Cured: NO decaying whatnot.
Cured rock can become uncured if you leave it out of water or starve it of ammonia and nitrites.
The ideal route is buying all cured rock as it will be 100% ready for a fish. Poor people have to buy uncured rock and wait for it to become cured before adding fish.
People like me that live in places like trashcans cant even buy uncured. We buy dry rocks.
We bum some bacteria off someone via a small live rock or some sand from their tank and grab a snickers.
TO sum it all up...
Cured rock: No time to wait
Uncured rock: Got to wait for stuff to die off
Dry rock: Grab a snickers
Matt