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Red Dragons!
Here is my take. Stay away from CL rock. You have no idea what the previous owner did to that rock. It could have been in a tank with copper or other meds, ick, it could have come out of a high PO4 or nitrate tank and leach that stuff into your brand new set up. I went with Marco rock for my display as per them it is not taken out of the ocean. I cannot confirm that but that is what they advertise. That meant a lot to me, I think removal of LR from the ocean harms the reef way more than fish collection or coral collection. The rock I got is super clean and did not leach anything I can test for into my tank. I then went to the LFS and other RC members and bought choice pieces of healthy rock and was patient. If you’re not patient then this is the wrong hobby for you.