If the Rekord filter is the same as the one in the Rio range, you'll find it has a black carbon sponge and a green nitrate one. You don't need either. Set it up as in the instructions, with the fine blue sponge at the bottom, the coarse blue one next, and then where they tell you to put the green and carbon sponges, put in the media from your bio orb filter. Finally, put the white pad on top. It'll make sense when you've got it in front of you. When I set up my Rio, I just chopped up the sponge from my old filter until it fit. Remember to keep the old filter wet while you're doing this, and be as quick as you can.
You'll have to keep the old media in there till the bacteria establish themselves in the new sponges - I'll let someone with a bit more experience tell you how long! Once the new media is established, you can replace the old one with a new sponge, or even a bag holding some ceramic media.
Thank's for this, does anyone have any idea how long? Obvioulsy once I pull the filter from the biorb, the old tank will get VERY messy and I imagine the fish will get stressed, so i'd want to move them in very quickly after doing this, any ideas?







