Monthly Archives: March 2014

In September of last year a 5 gallon slow sand filter (filter 10a)  was set up. The orginal post is here. Since then 2 more filters have been added to the experiment. We call them filter 10b and 10c. They have been … Continue reading →

If you “backwash” a slow sand filter, you will destroy it.  Backwashing is for rapid sand filters. I posted a bit of info on this about a year ago. I did not mention why backwashing will ruin a slow sand filter. Here … Continue reading →