2nd November 2006 at 3:40 pm #684
We had the same trouble. People who paid for filters to be made for them, often didn’t take any responsibility for their maintenance. Before long the technology and the providers where getting a bad reputation. We switched to the CMS Home made biological filter on http://www.cms-uk.org/water and adapted some of the training material posted there (they are crude but effective), initially as a trial. Simple enough to use plastic drums rather than clay jars.
In the new areas where we started with this home made technique we just haven’t had those problems. People are even training each other to make filters independently.