Waterfall Boxes

How do I know what flow I want?
A simple rule of thumb for waterfalls is to use the appearance of the falls as your guide to flow. If you will be satisfied with a trickle of water that breaks up into many small rivulets or ribbons of water as it falls off a sharp edge, you will need 50 gph per inch of width of falls, so a 12” wide waterfall will need 600 gph for a trickle. For a clean sheet of water off a sharp edge you need about 100 gph per inch of falls, so you’d get the water to sheet off the same 12” wide waterfall edge with 1200 gph. For the appearance of a LOT of water flow, you’ll want about 200 gallons per inch, or 2400 gph falling over that 12” wide waterfall.