DIY Pond Filters

Here is a link to a forum where an under gravel filter is suggested.


This also looks like a good idea to me.  One thing I learned is that at first when my fish were small there was very little debris to deal with, but as the fish reproduced and grew bigger it became a problem.  At one point I was cleaning the filter everyday. 

My feeling is that a large gravel bed with 3/4" rock and vermaculture will require the least amount of maintenance and provide a great amount of bio-filtration.   But sometime the situation calls for a filter and these appear to be pretty good.






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