Real Reef Nano Arches (6–8 inches)—reef-safe, bio-active, and perfect for natural overhangs and swim-throughs in marine and hard freshwater aquariums.

Real Reef Nano Arches – 20 lb Box (6–8 pieces, 6–8 inches)

Real Reef Nano Arches provide an effortless and natural way to create stunning aquascapes using our signature reef-safe, calcium-based material. This 20-pound box contains 6 to 8 pre-cured arches sized between 6 and 8 inches, each showcasing realistic textures and vibrant pink, purple, and red hues that mimic mature coralline-encrusted rock.

Ideal for building dramatic overhangs, swim-throughs, caves, and elevated coral platforms, these ready-to-use Nano Arches make aquascaping simple for hobbyists of all levels. Their porous, bio-active design supports coral attachment, enhances water flow, and encourages natural fish behavior.

Safe for marine reef and fish-only saltwater aquariums, Nano Arches are also suitable for hard freshwater systems with higher pH. Sustainable, pest-free, and easy to handle, these arches make a beautiful centerpiece or support structure for your reef setup.

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A 20-pound box of 4 Real Reef Medium Arches (10–12 inches)—reef-safe, bio-active, and perfect for natural overhangs and swim-throughs in marine and hard freshwater aquariums.

Real Reef Medium Arches – 20 lb Box (4 pieces, 10–12 inches)

Real Reef Medium Arches provide durable, reef-safe calcium-based structures perfect for building naturalistic aquascapes. This 20-pound box includes 4 pre-cured arches, each measuring between 10 and 12 inches, featuring vibrant shades of pink, purple, and red that authentically mimic mature coralline-encrusted rock.

Ideal for creating impressive overhangs, swim-throughs, caves, and elevated coral platforms, these arches simplify aquascaping for aquarists of all skill levels. Their lightweight, porous design promotes biological filtration, enhances water flow, and supports coral placement.

Safe for marine reef and fish-only saltwater aquariums, these Medium Arches can also be used in hard freshwater systems where a higher pH is acceptable. Sustainable, pest-free, and easy to work with, they serve as stunning centerpieces or structural supports in your reef environment.

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