Rain water harvesting and slow sand filter update

All the filters are still functional with the exception of one. The filter connected to the largest pond has been inactivated by damage due to the wildlife present here.  We are reasonably sure the damage was caused by raccoons. The output pipes were disrupted and as a result all the water was pumped out into the ground. Re-activation will have to wait until there is enough rain to refill pond. In the mean time the filter remains inactive. This will be an interesting test of the pond filter to determine what happens if the filter stays inactive for over 2 weeks.  This has been a warm dry summer with several periods of heavy rainfall, and extended periods of warm dry, sunny weather.