What type of algae is this?
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taylorpitcher11
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Is this a relatively new tank? If so, it's just part of the cycling process. It gets ulgy before it gets pretty!
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Ox100
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Yes it is the tank has been up since February
twilliard
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If that has been up since Feb. then I suspect some sort of change has occurred in the tank. Does it blow right off the rock and does it ever start to cover the sand?
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Ox100
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No it doesn't blow or cover sand its just on that top part of the rock the other part if the rock has nothing on it
twilliard
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It is possible that what you are seeing is a brown alga as it seems to grow with direct light but that is speculation without using a microscope as most unwanted thinks such as cyano, spirulina, bryopsis use direct light.
twilliard
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The top of the rock is getting the highest direct PAR of the lighting which doesn't surprise me that it is growing there. If you use a brush, do it outside the take rinsing with lukewarm fresh water rinsing well as to help prevent the spread if it is a segmented alga.
