I currently have a 20 gallon long and its a very old, very used tank. Its been holding strong from two months but I just noticed some leaking from the very underneath of the black rim things. I can't tell if its water splashing out of the tank, or if a seal is leaking, its above the water line so its hard to tell. Given the tanks age though I don't want to play around and as soon as I get my check on Tuesday I'm going to buy a brand new tank, either same size or 29 gallon. The only thing I don't plan on transferring is the sand, I was wanting to switch to something different anyways. I will be transferring the filter, the sponge filter, all of the plants and decor. I JUST got the tank cycled after TWO MONTHS of HARD work and CONSTENT water changes so this is the absolute last thing I want to do, but its better than coming home to a busted tank, dead fish and a ruined carpet. Will the tank automatically cycle from all the old stuff or will I have to start all over?