These are the parts that you will find in your box.
Two repto filter medium cartridges, outflow tube with elbow fitting, decorative repto filter, 90 gph pump, lid, o-ring.
Install the ooutflow tube into pump discharge opening, slide o-ring over elbow fitting keeping it approximately 1/4" from end of elbow fitting opening. Place assembled pump in bottom of decorative repto filter. Rinse Cartridge filters uunder cold tap water to remove any carbon dust.
Insert filter cartriges into the slots on either side of pump and slide all the way down, place the lid on the filter.
Place filter unit in corner of tank and fill until water level is between minimum and maximum lines. Create a drip loop and plug your filter in. make sure to add water before plugging in and starting up the filter.