CaribSea South Seas Base Rock

A cost-effective foundation for building your reef. CaribSea South Seas Base Rock is natural, weathered aragonite base rock with exceptional micro and macro porosity, an economical foundation for stacking more colorful live rock on top. Its porous structure gives beneficial bacteria enormous surface area to colonize, powering your biological filtration, and it stacks into stable, natural-looking reef structures. Build your scape and stock it with corals.

Why This Rock

• Zero-impact rock suitable for reef, marine, brackish, and African cichlid tanks
• Highly porous aragonite provides enormous surface area for beneficial bacteria
• Stacks into stable, natural-looking reef structures
• A functional, cost-effective way to build biological filtration and rockwork

How to Aquascape With It

• Rinse and cure the rock before adding it to an established tank
• Build a stable base, set larger pieces first, and epoxy or glue joints for security
• Create caves, overhangs, and ledges for corals and fish, and leave open flow paths
• Aim for open, negative space rather than a solid wall for a healthier, more natural look

Buying Options

Specifications

Pair It With

• Live sand and a salt mix to build your reef foundation
• Browse all corals, saltwater supplies, and hardscape

Frequently Asked Questions

Is this live rock or dry rock?
It is a natural dry base rock, so cure it before adding it to a stocked tank. It makes an excellent, affordable foundation under live rock.

Freshwater or saltwater?
It is made for saltwater and reef aquariums, and also works well as base rock in brackish and African cichlid tanks.

Do I need to cure it first?
Yes. Curing dry rock in saltwater before adding it lets any residues and die-off cycle out, protecting your livestock.

Which option should I buy?
Buy per pound to hand-pick your foundation, or the 40 lb box for a large build.