A bog or wetland filter is where water rises thru a bed of several grades of gravel and plant roots that filter the sediments and reduce nutrients that in turn purify the water. Working with mother nature to balance the water garden with a variety of plants help the process along with varering depths of roots to grab and use the nutrients. The photos show the building of a 4x6 bog/wetland filter added to an 11x16 pond.

View Bog Installation