Oceans Wonders Aragonite Frag Tiles
Oceans Wonders Aragonite Frag Tiles are made from high-purity aragonite that mimics natural reef chemistry, providing a chemically stable and slightly porous grow-out surface that encourages rapid encrustation. They hold a best-in-class position for cost-effective, reef-compatible flat substrates — cheaper and more chemically integrated than ceramic or synthetic options and easier to pair with modular systems like the Two Little Fishies racks. Compared with bulk rock shapes and putties, these tiles offer predictable surface area and simple placement for scaled grow-out operations.
Aragonite base — reef-ready
Uniform flats — glue-friendly
Aragonite base — reef-ready
Uniform flats — glue-friendly
Review Summary
"Users consistently praise Oceans Wonders Aragonite Frag Tiles for their natural aragonite composition that promotes coral growth and stability, with many noting they are aquarium-safe and integrate well with live rock. A few reviewers mention occasional fragility and size variability between batches."
Porous texture — hitchhiker haven
Made from pure aragonite to encourage calcification and healthy coral growth
Porous texture — hitchhiker haven
Made from pure aragonite to encourage calcification and healthy coral growth
Skill Development & Mastery
Time-Saving Convenience
Recreational Enjoyment
Oceans Wonders Aragonite Frag Tiles are made from high-purity aragonite that mimics natural reef chemistry, providing a chemically stable and slightly porous grow-out surface that encourages rapid encrustation. They hold a best-in-class position for cost-effective, reef-compatible flat substrates — cheaper and more chemically integrated than ceramic or synthetic options and easier to pair with modular systems like the Two Little Fishies racks. Compared with bulk rock shapes and putties, these tiles offer predictable surface area and simple placement for scaled grow-out operations.
Aragonite base — reef-ready
Uniform flats — glue-friendly
Porous texture — hitchhiker haven
Made from pure aragonite to encourage calcification and healthy coral growth
Porous, rough texture gives corals a secure surface to encrust quickly
Aragonite base — reef-ready
Uniform flats — glue-friendly
Porous texture — hitchhiker haven
Made from pure aragonite to encourage calcification and healthy coral growth
Porous, rough texture gives corals a secure surface to encrust quickly
$12-25 USD
Two Little Fishies ReefRack Frag Rack System
Two Little Fishies ReefRack Frag Rack System is a precision-engineered, modular rack platform favored by hobbyists and retailers for organized, high-density frag propagation and predictable water flow around each plug. It commands market-leader status for operational efficiency and durability — a higher upfront investment than loose tiles or caves but cheaper over time due to reusability and reduced frag loss compared with ad hoc mounting solutions. In contrast to bulk rock or putty options, the ReefRack prioritizes accessibility and standardized spacing for inventory-style grow-out.
Snap-fit design — tool-less fun
Adjustable grid — flow-smart
Snap-fit design — tool-less fun
Adjustable grid — flow-smart
Review Summary
"Two Little Fishies ReefRack Frag Rack System is widely regarded as a sturdy, modular, and aquarium-friendly solution for organizing frags, with positive notes on build quality and customization. Some buyers call it pricey but agree it's durable and effective long-term."
Elevated platform — display ready
Modular, multi-tier design holds large numbers of frag plugs in organized rows
Elevated platform — display ready
Modular, multi-tier design holds large numbers of frag plugs in organized rows
Time-Saving Convenience
Skill Development & Mastery
Recreational Enjoyment
Two Little Fishies ReefRack Frag Rack System is a precision-engineered, modular rack platform favored by hobbyists and retailers for organized, high-density frag propagation and predictable water flow around each plug. It commands market-leader status for operational efficiency and durability — a higher upfront investment than loose tiles or caves but cheaper over time due to reusability and reduced frag loss compared with ad hoc mounting solutions. In contrast to bulk rock or putty options, the ReefRack prioritizes accessibility and standardized spacing for inventory-style grow-out.
Snap-fit design — tool-less fun
Adjustable grid — flow-smart
Elevated platform — display ready
Modular, multi-tier design holds large numbers of frag plugs in organized rows
Constructed from corrosion-resistant materials (anodized aluminum/acrylic) for saltwater durability
Snap-fit design — tool-less fun
Adjustable grid — flow-smart
Elevated platform — display ready
Modular, multi-tier design holds large numbers of frag plugs in organized rows
Constructed from corrosion-resistant materials (anodized aluminum/acrylic) for saltwater durability
$60-150 USD
Eshopps Frag Cave
Eshopps Frag Cave provides a semi-enclosed, cave-like attachment substrate that creates shaded microhabitats and stable water flow around encrusting corals, making it especially useful for species that prefer subdued light and protection. It is a financially attractive middle ground — less expensive than modular rack systems but more biologically purposeful than flat tiles, offering naturalistic attachment points without the bulk or cost of large life rock shapes. Compared with putty, the Frag Cave needs no curing and provides instant, repeatable placement for grow-out.
Cave shape — secure shelter
Ceramic finish — glue-friendly
Cave shape — secure shelter
Ceramic finish — glue-friendly
Review Summary
"Eshopps Frag Cave is popular for its affordable, natural-looking caves that make mounting and hiding frags easy, and many users report good long-term attachment and coral acceptance. A minority report occasional issues with adhesive holding or initial dust that requires rinsing."
Compact size — micro-fortress
Ceramic cave shape mimics natural overhangs and provides protected attachment points
Compact size — micro-fortress
Ceramic cave shape mimics natural overhangs and provides protected attachment points
Recreational Enjoyment
Skill Development & Mastery
Eshopps Frag Cave provides a semi-enclosed, cave-like attachment substrate that creates shaded microhabitats and stable water flow around encrusting corals, making it especially useful for species that prefer subdued light and protection. It is a financially attractive middle ground — less expensive than modular rack systems but more biologically purposeful than flat tiles, offering naturalistic attachment points without the bulk or cost of large life rock shapes. Compared with putty, the Frag Cave needs no curing and provides instant, repeatable placement for grow-out.
Cave shape — secure shelter
Ceramic finish — glue-friendly
Compact size — micro-fortress
Ceramic cave shape mimics natural overhangs and provides protected attachment points
Textured, porous surface encourages rapid encrustation and stable growth
Cave shape — secure shelter
Ceramic finish — glue-friendly
Compact size — micro-fortress
Ceramic cave shape mimics natural overhangs and provides protected attachment points
Textured, porous surface encourages rapid encrustation and stable growth
$15-35 USD
Caribsea Life Rock Shapes
CaribSea Life Rock Shapes are large, manufactured aragonite rock pieces engineered to combine structural decor with extensive porous surface area for both biological colonization and coral attachment. They stand out for dual functionality — although typically pricier and bulkier than tiles or racks, they replace traditional base rock while giving frags ample nooks to grow out and mature, outperforming single-use putty when a permanent, integrated aquascape is desired. Compared to racks and caves, CaribSea offers the best long-term ecological value for systems seeking live rock benefits alongside grow-out capacity.
Sculpted forms — aquascape ready
High porosity — biofilter boost
Sculpted forms — aquascape ready
High porosity — biofilter boost
Review Summary
"Caribsea Life Rock Shapes receive strong reviews for their porous, biologically active structure that promotes bacterial colonization and natural aquascaping, with many hobbyists praising their appearance and functionality. Some consumers note they can create fine dust on unpacking and need rinsing before use."
Natural aragonite — mineral-rich charm
Molded aragonite rock shapes provide realistic, porous surfaces for coral attachment
Natural aragonite — mineral-rich charm
Molded aragonite rock shapes provide realistic, porous surfaces for coral attachment
Increased Safety & Security
Skill Development & Mastery
CaribSea Life Rock Shapes are large, manufactured aragonite rock pieces engineered to combine structural decor with extensive porous surface area for both biological colonization and coral attachment. They stand out for dual functionality — although typically pricier and bulkier than tiles or racks, they replace traditional base rock while giving frags ample nooks to grow out and mature, outperforming single-use putty when a permanent, integrated aquascape is desired. Compared to racks and caves, CaribSea offers the best long-term ecological value for systems seeking live rock benefits alongside grow-out capacity.
Sculpted forms — aquascape ready
High porosity — biofilter boost
Natural aragonite — mineral-rich charm
Molded aragonite rock shapes provide realistic, porous surfaces for coral attachment
High porosity supports beneficial microfauna and biological filtration
Sculpted forms — aquascape ready
High porosity — biofilter boost
Natural aragonite — mineral-rich charm
Molded aragonite rock shapes provide realistic, porous surfaces for coral attachment
High porosity supports beneficial microfauna and biological filtration
$20-80 USD
Maxspect Coral Putty Stone
Maxspect Coral Putty Stone is a moldable, mineralized putty that hardens into a stone-like substrate, allowing secure, custom-shaped attachments and on-the-spot repairs during fragging and mounting. It excels technically for precision work and complex bonding situations where preformed tiles, racks or rock shapes cannot be adapted — although per-use material cost can be higher, its speed and versatility make it indispensable for professional fraggers. Used alongside racks or life rock, Maxspect putty provides the fastest route to permanent bonds and tailored attachment geometry.
Instant bond — sets fast
Sculptable putty — custom bases
Instant bond — sets fast
Sculptable putty — custom bases
Review Summary
"Maxspect Coral Putty Stone is commonly described as easy to work with and reliable for securing frags underwater, curing to a hard, long-lasting bond; users appreciate its holding strength. A few reviewers find it messy to apply and suggest care during placement."
Reef-safe cure — sticky smile
Putty formula adheres and cures underwater for fast, reliable coral mounting
Reef-safe cure — sticky smile
Putty formula adheres and cures underwater for fast, reliable coral mounting
Time-Saving Convenience
Skill Development & Mastery
Maxspect Coral Putty Stone is a moldable, mineralized putty that hardens into a stone-like substrate, allowing secure, custom-shaped attachments and on-the-spot repairs during fragging and mounting. It excels technically for precision work and complex bonding situations where preformed tiles, racks or rock shapes cannot be adapted — although per-use material cost can be higher, its speed and versatility make it indispensable for professional fraggers. Used alongside racks or life rock, Maxspect putty provides the fastest route to permanent bonds and tailored attachment geometry.
Instant bond — sets fast
Sculptable putty — custom bases
Reef-safe cure — sticky smile
Putty formula adheres and cures underwater for fast, reliable coral mounting
Pliable for precise placement then hardens to a durable, long-lasting bond
Instant bond — sets fast
Sculptable putty — custom bases
Reef-safe cure — sticky smile
Putty formula adheres and cures underwater for fast, reliable coral mounting
Pliable for precise placement then hardens to a durable, long-lasting bond
$18-40 USD