hey i want to get some corals and some shrimp in and i dont know how long i should wait. i hve about 30 lbs of live rock in their now and im still going to be putting more in to finish my reef. can i put one or two soft corals in now on that rock or should i wait until i am done putting rock in. also i have three fish in now, a yellow tang, a one spot foxface and a clarkii clownfish, can i put a shrimp in there? thanks