CHEAP biological filter media

  • We are currently upgrading MFK. thanks! -neo
I use lava rock from the garden store.
The bio tower below is about 4ft tall, and 8" in diameter, there's a pot scrubber for mechanical filtration on top of the lava rock that is easily rinsed.


 
What do you mean?


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I recently purchaced a Fluval FX6 and of course wanted the best bio filter to go with it. I have done a great deal reasearch on which bio media would have the most amount of surface covrage per volume. I initially decided on SeaChem's Matrix being made of micro tubules it seemed to have the most amount of surface area per volume being made of microtubules that water could flow through. Unfortunately my crude observations are showing othewrise. I believe the biofilm cloggs the the tubules leaving no more than a volcanic like rock. I believe smaller spheres or Fluval rings to be much more reliable.
 
drinking straws will work (plastic)...just cut them up , to about an inch long
 
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