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Assembly Instructions: 

1. Unscrew the nut from the bulkhead assembly. Install the bulkhead with the rubber gasket inside the overflow

body. Hand tighten the nut from the bottom of the overflow body. Insert the PVC Pipe with Vent Tube into the
bulkhead opening on the inside of the overflow body. Place the noise-reducing cylinder foam sleeve over the
PVC pipe with vent tube.

2. Unscrew wing nut from nylon screw. Insert nylon screw into black surface overflow box and attach to the

overflow body, slide black surface overflow box up and down to desired water level. Hand tighten wing nut to
the back side of the hanging bracket of the overflow body.

Summary of Contents for Nano OF Series

Page 1: ...ws for easy and convenient installation Adjustable pre filter height allows you to adjust the water level inside your aquarium Please read the entire directions before and during installation to ensure proper operation Package Contents 1 Bulkhead Assembly 2 U Tube 3 Airline Tubing 4 PVC Pipe with Vent Tube 5 Noise Reducing Cylinder Foam Sleeve 6 Nylon Screw and Wing Nut 7 Black Surface Overflow Bo...

Page 2: ... Vent Tube into the bulkhead opening on the inside of the overflow body Place the noise reducing cylinder foam sleeve over the PVC pipe with vent tube 2 Unscrew wing nut from nylon screw Insert nylon screw into black surface overflow box and attach to the overflow body slide black surface overflow box up and down to desired water level Hand tighten wing nut to the back side of the hanging bracket ...

Page 3: ...e fewest bends in the drain line will ensure the quietest operation 5 Insert one end of the airline tubing into the opening of the U Tube and push until your airline reaches about the top center of the U Tube Place the U Tube between the two boxes ensuring that the inserted airline end is place inside of the overflow body Allow the U Tube to rest inside of the empty narrow chamber opposite of the ...

Page 4: ...umulate at the top of the U Tube as proper water flow will force any bubbles all the way through the U Tube If air accumulates in the U Tube check to make sure the overflow box is completely parallel to your aquarium and your return pump has sufficient water flow 10 Proper attention must be given to the external filter Ensure that the return pump is completely submerged and that your filter is not...

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