white rocks turning brown? - The Planted Tank Forum
 
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post #1 of 4 (permalink) Old 03-11-2007, 06:49 AM Thread Starter
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white rocks turning brown?

i have scattered white rocks in my 10G and they are turning brown/becoming dirty.

is this some form of algae or just a natural occurrence?
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post #2 of 4 (permalink) Old 03-11-2007, 07:19 AM
Are these real?
 
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Yes and yes, it is brown algae, aka diatoms, and a natural occurrence. There is a lot of biological activity in our tanks that tends to populate most surfaces (biofilm), turning bright colors into more muted colors.


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post #3 of 4 (permalink) Old 03-11-2007, 07:52 AM Thread Starter
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so is there anything that i can do to combat it, or do i just let it run its course?
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post #4 of 4 (permalink) Old 03-11-2007, 08:57 AM
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Quote:
Originally Posted by mickeyirish View Post
so is there anything that i can do to combat it, or do i just let it run its course?
Bristlenose plecos. It's their favorite treat.
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