DebinChch Posted March 16, 2012 Report Share Posted March 16, 2012 hi i have bought some dead coral rock for my cichlid tank but its quite discoloured(brown) i have added a little bleach to a container and submerged but its not whitening ,any one know how i can get it nice a white again thanks in advance Quote Link to comment Share on other sites More sharing options...
blueether Posted March 16, 2012 Report Share Posted March 16, 2012 I believe either bleach or sunlight are normally used Quote Link to comment Share on other sites More sharing options...
livingart Posted March 16, 2012 Report Share Posted March 16, 2012 you can try water blasting it or leave in direct sunlight for awhile or both Quote Link to comment Share on other sites More sharing options...
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