As mentioned on the previous blog it is important to have the basin full of water and the system flowing before you start trimming the liner just in case an adjustment is needed or you have soft soil (sand)beneath the filter.  When trimming the raceway liner it is best to [...]

After the basin frame is constructed and leveled, position the two pieces of 30mil liner. The larger piece is for the basin and the other piece is for the return raceway.  It is helpful to dig a shallow channel from the basin frame to the pond edge before placing the [...]