11-05-2004, 08:43 PM
Join Date: Feb 2004
Location: In the desert
iTrader Positive Rating: 100%
Not sure about the wiffle balls. The bio balls are just there for turbulence.
Not sure how big of a tank this is good for, but I would easily feel comfortable with it on a 100-150g tank...give that it can easily load up a 30g with CO2 without even blinking.
You could always make the clear section longer than 8" if you really want to.