Reef Ballstm are designed so
that over half of the weight is in the bottom near the sea
floor. All sizes of Reef Balls have withstood, without
movement, heavy tropical storms in as little as 20 feet of
water without anchors. Reef Balls are stable
because the opening in the top of the unit breaks up the
lifting force of the hydrofoil effect common to dome shapes.
Side holes are wider near the center of the walls and narrow
near the units surface. This feature creates miniature
vortexes which further reduce lifting forces and bring rich
nutrients to life on the reef. Reef Balls can be
cast up to double the standard weight to accommodate high
energy zones, or they can be cast at 75% of the standard
weight to save concrete for bay, deep or protected water
locations. Our staff will help you determine the best way to
What's a Reef Ball?
Why Build Reefs?
Unique Hole Sizing
Marine Friendly Concrete