CaribSea LifeRock (per lb)
CS-LIFEROCK
CaribSea LifeRock is an aragonite-based artificial live rock infused with spored bacteria using AragAlive technology to reduce cycling times. Built on an aragonitic base (about 97% calcium carbonate) rather than...
Or build it into a bundle — save up to 6% ↓What it is, and who it is for.
CaribSea LifeRock is an aragonite-based artificial live rock infused with spored bacteria using AragAlive technology to reduce cycling times. Built on an aragonitic base (about 97% calcium carbonate) rather than cement, it has roughly 50% void space and a network of micro and macro pores that house water-purifying bacteria. Engineered aragonite coatings give it the soft, muted colors of a natural reef, and it is ready to use with no curing and no pest risk.
Build around the CaribSea LifeRock (per lb).
It's already in your system below. Add the flow, filtration and dosing around it and the discount starts working — tiers climb as the build grows, and the reef meter fills with it.
Pick the right one, not the biggest one
The honest line-up from rock & sand. Most buyers reading this page should buy the middle column.
Marco Rocks Shelf & Branch Rock (per lb)
CaribSea LifeRock (per lb)
CaribSea Arag-Alive Aragonite SandAsked before checkout
The questions our support inbox actually gets.
Does it ship quickly?+
Orders placed before 2 PM ET on a business day leave the same day. Tracking is emailed the moment the label prints.
What if it's the wrong fit for my tank?+
Return it. 30 days, no restocking fee, refund to the original payment method. Better: tell us your tank first and we'll spec the system for free — half of all returns are sizing problems.
Who handles the warranty?+
We do. Everything carries the manufacturer's warranty and we run the claim for you — one email to us instead of a ticket queue.
How does the bundle discount work?+
Add items in the bundle builder: 2+ items saves 5%, 3+ saves 8%, 4+ saves 12%, and 5+ saves 15% off the whole system, applied at checkout.