Well it sounds like I will be getting a 150g tank in late June. I am starting to plan the swap now, as I would like it to go as smooth as possible. I will be picking up the tank and livestock here in loveland, and will be putting it where my 90g sits now. I think I have decided to move my 90 to another location (about 12 feet away) a few days before new tank comes home. What I'm still trying to decide is if I will rinse and re-use sand or just buy new, if I will start with both tanks running and slowly move things or just set up the new tank and do the swap all at once.....I will have a LOT of liverock to work with and I know the all at once strategy makes for a very long and risky day! Last but not least I will need to borrow some muscles when the day comes, and maybe a few brute trash cans for water and rock. Let me know what you guys think and any advice would be helpful.