snip The Aquaultraviolet tank filter, similar to the bead filters, uses
a hollow media, but it is short chopped pieces so they won't have enough
length to go anaerobic. Find a glue them together, or rubberband them
together and they would be like the pvc pipe, which builds a nice biofilm on
the inside surface.
--
RichToyBox


Couldn't he just cut the straws into smaller pieces?