Last week I took down my 30 gal, and I now have a eheim 2213 to use... I'm gonna put it on my 110 that uses 2 2217's... My question is should I use it as strictly bio, or strictly filter pads, or both like a reg eheim setup?... Not sure how effective it will be cuz of the flow rate on a larger tank... Should I use a different type of media? My 2217's are the classic setup... Also can I wash off the bio media and reuse it or should I buy new? Thanks to anybody who read through all this, lol