I just started my new tank about 2 weeks ago. I put in 22lbs. of Pre-cured Fiji Live Rock and about 20 lbs. of Uncured Vanuaatu Live Rock on top of 35lbs. of live sand. I'm not sure if I should have waited to put the sand in, I've read mixed opinions. About 1 week into the cycle, I added some bottled nitrifying bacteria that claims you can add livestock immediately. I don't know if I believe this. Should I still wait 8 weeks before doing anything?