Orange / Brown substance on Rocks? - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 2 Old 02-02-2010, 05:33 AM Thread Starter
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Orange / Brown substance on Rocks?

Hey guys.

Im not sure if this is normal but there is a Orange / Brown substance building on the rocks. it seems to be very "thick" like.

Anyone have any ideas about this?

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post #2 of 2 Old 02-02-2010, 06:03 AM
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yes it is a form of alge bloom. Take your rocks out. and scrub them with a brush. Then rinse them. I take mine out every 5 days. to scrub. I havnt had it that bad yet. I think it has some thing to do with the nitrates or nitrites. Not 100 percent sure tho.
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