I got a couple really cool dry white coral skeletons. Question is, what do I have to do before putting it my tank to avoid water perameter changes. I don't know exactly where the pieces came from, so I soaked it in water with a strong amount of conditioner over night. It's only about 3-5 pounds of rock, and I already have around 100 pounds fully cycled in my tank in a stable system, so can I just stick it in with no adverse effect or do I really need to fully cycle the rock first?