Step 1 – Pick Your Spot
You need level ground and access to power for the pump. The whiskey barrel has a round footprint about 2 ½-feet across, so you need at least that much space, and filled with water and rocks it will be heavy, so it has to be on solid ground.
Step 2 – Drill Out the Buckets
Step 3 – Cut the Landscaping Fabric
This is the material you put down on the ground to keep weeds from growing through. In this case, we're using it to mask the grill grates, and to prevent the pebbles from falling through them. Cut 2 pieces: one to cover the large grate and one to cover the small. Cut a slit in the center to let the hose pass through.
Step 4 – Thread the Hose
Step 5 – Set the Stack in the Barrel and Fill With Rocks
Step 6 – Fill With Water and Plug It In
This might mean being ¼-inch out of level, but no one will ever notice because they'll be too entranced by the babbling waters and impressed by your handiwork.