switching tanks
One of the things to watch out for is your parameters. second is developing the eco system in the new tank. With larger tanks it will take longer. The old saying patients is a virtue, so true in salt water. To help mature the new tank you could go to the pet stores and get enzymes ones in the bottle are dead enzymes and the frozen are live. I would stick with the live. I would start off with reverse osmosis water with the enzymes, and have the filter running. I would buy a hardy fish like damsels to speed the process. If all parameters are the same as your original tank including temperature start aclimating your substrate and live rocks first then the hardy fish saving the fragile species until last. I used Cycle from Nutrafin along with the frozen enzyme. Time frame from start to finish depends on how the new tank matures and what type of fish you have. I have a 75 gallon I started from scratch and I introduced new fish into the system after three days of filtration and adding enzymes. :sfish: