Pharaoh;2186122; said:I see where you are going with this. If you use 20ppm & 30ppm filter foams in the first tray, then bio media in the second and third try, then you should be able to run only mechanical in your AC110. There will be more than enough bio in your Rena to handle the tank. You could either leave the green/white pad in the XP3 or take it out and just polish with the AC110. Although i recommend leaving it in. Every little bit helps.
Yep, thats what i want to do. Except there is only 3 trays. The first is the sponges, the second is full of bio media, and the third has crushed coral and the polishing pad.