I'm still fairly new to the hobby and both of my tanks are only 25 gallons so i'm not really that familiar with that one, but if you have the type of filters in both tanks that have the little cartridges of media that you insert, like the sponge, the carbon and the bio-media, then if you add that mature bio-media right from the old tank right into the filter of the new tank, you can pretty much skip over the whole cycling process by doing that for the most part. That's what I did while setting up my 2nd tank. If you're not able to do that with your particular filters though, there still possibly is ways to greatly accelerate the cycling process in your new tank using your old tank, but you'll have to wait for a more knowledgeable member to come across this thread before they can help you with that, because that's beyond me, lol.