fishgirl53 Posted June 17, 2011 Report Share Posted June 17, 2011 Hi everyone I have a very slight pink colouration on the bottom of a couple of my limestone rocks and on my piece of dead coral does anyone know what this is and is it harmful what causes it? Quote Link to comment Share on other sites More sharing options...
critter_crazy Posted June 17, 2011 Report Share Posted June 17, 2011 Is it maybe left over food that's gone bad? Thats the only thing I can think of that would be pink, but I'm just starting out :spop: Quote Link to comment Share on other sites More sharing options...
Squirt Posted June 17, 2011 Report Share Posted June 17, 2011 It's really hard to know without some pictures. If you add some it will help identify and resolve the issue. Quote Link to comment Share on other sites More sharing options...
Stella Posted June 20, 2011 Report Share Posted June 20, 2011 try looking up cyanobacteria. That can come in a variety of colours from the typical 'blue-green' to browns and pinks. Quote Link to comment Share on other sites More sharing options...
spoon Posted June 20, 2011 Report Share Posted June 20, 2011 how long has the coral rock been in the tank ? sometimes it has red/pink parts on it natrually some of my old liverock does (and ddi when it was dead too) Quote Link to comment Share on other sites More sharing options...
fishgirl53 Posted June 21, 2011 Author Report Share Posted June 21, 2011 Thanks to everyone the coral has been in the tank for around 5 months it is also on some of the lime stone rocks I will try to get some pics up Quote Link to comment Share on other sites More sharing options...
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