"Tom Wikoff" wrote in message ...
That bio-filter has approx. 50 bags of lava rock

50 bags of lava rock?!?!?
I have a littly bitty 20 gallon garbage can/lava rock filter
and it takes me an hour to clean it.
I don't even want to think about what you've got ahead of you
some day.......
It will clog up eventually.
You for sure need a big veggie or mechanical pre filter to keep
that day as far off as possible!

Peace!
Dan D. Louisville Ky good ole USA
http://ky-dan.com