Rubbermaid Stock Tank Drain Valve Installation for the Indoor Aquaponics System

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When I bought the 100 Gallon Rubbermaid Stock Tank for my aquaponics system, I decided to remove the drain plug and install a valve instead.  This will allow me to attach a garden hose to the tank and drain it out the door of the quail house easily if necessary.

Of course the threads for the drain valve were much larger than a standard garden hose fitting, so I needed a reducer.  I searched around online and had a hard time figuring out what size thread the drain plug was.  So I just took the bulkhead out and brought it to a hardware store and found what fit.

Get a 1 1/4″ x 3/4″ reducer.  That will fit into the bulkhead where the drain plug was.  Then you can simply screw in a valve of your choice.  I chose a boiler valve since it’s short and won’t stick out too far where I’d trip over it.

Here’s how to install it.

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