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Old 07-26-2011, 01:20 PM   #1
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why so many colors on my rock?

is his some type of alge? is it bad??

thanks
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Old 07-26-2011, 01:55 PM   #2
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its coraline algae me thinks,not good or bad,just nicely coloured
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Old 07-26-2011, 05:30 PM   #3
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If the green is hard i.e. It won't just rub off it is coraline
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Old 07-26-2011, 05:32 PM   #4
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try to rub the red part that kind of looks like red cyano to me but i could be wrong if it comes off easy its cyano
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