In my 56 gal tank I only have 30 lbs of live rock. Everything been running great with no detectable ammonia and nitrite. I have 4 fish, 2 cleaner shrimp, and multiple snails and crabs. I plan on buying 20-25 pounds more of live rock tonight from a guy who has it in one of his tanks and transporting the rock in a bucket with heated water. Will this rock cause an ammonia spike or can I just add it all and not worry about it. I would consider it cured rock since its coming from his established tank. My thought is there should be basically no die off in the transfer process. Am I correct in my assumption?