Back to school sale! $150 for 50lbs shipped.

[reefwars]

Don't suppose you would extend that offer for some tonga branch??

[EcoReefer]

Without seeing Caribseas South Seas or Primo Reef Rock first hand I can only go by their description / photos. Our Reefer Rock would be identical in mineral makeup (calcium carbonate) but from their pictures I would say our rock would be more porous and more constant in characteristics (color, surface shape, porousness).