Manufacturer of Underwater waterfalls for Aquariums.  The Sand Waterfall  by AquaVista Aquatics LLC 

The Haifoss SandFall and FIlter

 (Shown in a 80 gallon rimless tank with angelfish)

The Háifoss SandFall FIlter

 (Shown in 36 gallon bowfront)

The Háifoss SandFall FIlter

 Customer Tank in Night Light and Normal Light

The Háifoss SandFall FIlter

 Customer Tank - SaltWater

The Háifoss SandFall FIlter

 Customer Tank

The Yosemite Scapable SandFall