dnoll June 15, 2017 Share June 15, 2017 Hi ya'll- Noob question: I got this rock from a store to help seed a new tank with otherwise dry dead rock. Can one of you experienced folk give me some assurance that the red and white algae in the pic is nothing to worry about? Also attaching a pic of my aquascape in progress for your viewing pleasure. Thanks! Daniel Link to comment Share on other sites More sharing options...
mari.harutunian June 15, 2017 Share June 15, 2017 If it blows off the rocks in a film when you use a turkey baster, it's cyano algae. If it is hard and will not come off the rocks it's coralline algae which is beneficial. Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
dnoll June 15, 2017 Author Share June 15, 2017 Thanks that's very helpful. I can rub my finger on it firmly and it won't come loose so I would think that means it's coralline. Much appreciated. Link to comment Share on other sites More sharing options...
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