Originally Posted By: keith_rowan
you can make a pretty simple bio filter out of a 5 gallon pail, some pvc, and scrub pads,,
http://www.skippysstuff.com/biofiltr.htm

i'll be adding one to my indoor system before i get my red claw crayfish


O.K. short term or in a pond where decomposition is taking place naturally, but I'd be concerned about too much organic matter building up in a closed system. Eventually your heterotrophs will take over your autotrophic bacteria and you will have problems. Just my two cents.

Without good mechanical filtration augmenting your biological filtration you're living dangerously.

JKB?

Last edited by Cecil Baird1; 10/22/10 08:20 AM.

If pigs could fly bacon would be harder to come by and there would be a lot of damaged trees.