10
of the tank. A rigid piece of thin wall tubing (conduit, copper pipe, etc.), approximately 1”
longer than the tank height works well as a leveling tool if you need it. Ensure that the riser
tube remains centered in the opening at the top of the tank.
Once this is complete, add the NextSand media in the same manner. Use all of the media
provided. Depending on the capacity of the system, there will only be enough media to fill
the tank to about 1/2 to 3/4 full. This is normal. The media tank should never be filled to the
top of the tank as the remaining space, known as the “freeboard,” is necessary for the media
to have room to expand during the backwash cycle.
Once you have finished adding the media to the tank, remove the tape from the distributor
tube. Be careful not to pull upwards on the riser tube while doing this as it is important that
the distributor remain in its recess at the bottom of the tank.
Fill the media tank with water up to within a couple of inches of the top of the tank. This will
allow the media to pre-soak, thereby preventing media loss during the initial backwash.
