| Re: Bio Balls, is this really why???
here you go woody.. http://reefkeeping.com/issues/2004-0...ture/index.php
...and steve, if you really want to get into it and love to read try this...even though it is an older article http://www.seabay.org/art_plenums_part2.htm
there is also a part one to that article.. http://www.seabay.org/art_plenums_part1.htm 
__________________
...and when I'm old and wise
little things mean little to me
like autumn winds they'll blow right through me
and someday, in the mist of time
when they ask you if you knew me
remember that you were a friend of mine
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