Caribsea aragonite buffers to the highest ph and delivers more calcium carbonate and trace elements than any other substrater little or no rinsing required aragonite keeps aquariums healthier longerr caribsea aragonite fiji pink reef is the perfect substrate for african cichlids buffering to a ph of 82 it is also ideal for marine and reef aquariumsr caribsea aragonite is collected from pristine ocean waters it reduces fish stress by replicating their natural habitat this is an envir