04-18-2008, 04:50 PM
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Bioballs are useless in a reef enviorment. Of course, they are fine in FOWLR/FO. They will become a 'trate factory.
I am pretty sure LR and LS are your main source of your biological filtration. You could use some LR rubble for extra "help."
You can put filter pads in SW. These would be ones you can use for like Marineland HOB filters. I have seen a lot of people DIY an AC110 and put an extra slot in for a Penguin, Emperor, or Millenium filter cartridge. You can use filter floss and activated carbon as well.