In my article, A Visit to Tank and his Amazing Fish Bins, I talked about a great deal I got on a large, 55-gallon plastic bins for growing out fish.
Here, I'll discuss how to double-plumb one of these bins to make water changes easy and to prevent accidental overfills. You can use this technique with just about any large container.
Here's what you'll need:
- Two one-inch bulkhead fittings
- One-inch PVC ball valve
- PVC Elbows
- Two PVC Barbed Connectors (for hose)
- One PVC barbed T Connector
- One inch ID flexible thin wall clear tubing
The actual parts you use may vary, but the basic principle is to drill two holes in the bin. One hole is the drain and other is the high-water level overflow. The high-water overflow bypasses the drain valve.
To drain the bin, you turn the valve at the bottom. To refill, turn the valve to off. The high-water level drain prevents flooding or may be used in a trickle system. The drain line runs to floor drain or sump pit for your home.