What WOULD be helpful is if you could take a sponge from your old tank and use it in your new tank. (I don't know if squeezing the sponge out in the new tank will really help much, but it can't hurt). Of course, you don't want to leave your old tank w/out any biological filtration either. I don't know what size/type filters you have, but if you could take 1/4-1/3 of the media from your old tank to use in your new tank, that would help a lot.