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EXTERNAL OVERFLOW  BOX [REAR VIEW]

1/4”

1” BH SxS

3/4” BH Thread x Slip

3/4” LOC-LINE 

MODERN REEF READY

Water line

Water line

Return Hose

!

NOTE: Primary Drain Pipe must be submerged a 

minimum of 1” for drain pipe to siphon properly. 

Primary Drain

1” BH SxS

4

2

E-Drain

3

1

1” Gate Valve is required to maintain 

proper water line in overflow box.

Secondary Drain

5

1

Primary Drain

Secondary Drain

E-Drain

Plumbing 

Not Included

!

E-drain needs to be 1/4” 

below the overflow teeth.

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