Transitioning from my 17 gal tank to a 29 gal. So far, I put in the new substrate after cleaning it and filled the tank with water + prime. I'm going to go get my new filter from the store today and I wanted to make things clear. I was told I could either hang my old filter along with my new one for my cycle to continue in my new tank. Could I also just use the new bigger filter and add the old media into the new filter? If I did that would I take out the new media or just mix the old with the new media in the same filter? Transitioning from the 30 aquaclear to the 50.