I just purchased a 135 gallon oceanic tank and i am going to be transfering my stock from my 90 over to this new tank. I will be using the sand from the 135 and sand from my 90(after rinsing of course) and also will be using rock from both tanks. My question is he has let this tank go and has a HA problem. Can i just let it sit out for a week or so to kill off the HA and the place in the tank? I will be transfering my coral and fish as well and do not want to kill anything. I have not done a tank transfer before and i am looking for some advice. Also if i use my water from the 90 and add 45 gallons of new water will i see a cycle and if so would it affect any of my coral that i have(softies to SPS).