pochitafish
Community Member
Was doing a water change and after everything was said and done and was admiring my work, I noticed this pink looking stuff bellow my sand bed, is this Cyano?
What is this?
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P-Dub
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If I were a betting person, that's exactly what it looks like to me.
DexterKarin
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I have always had reddish substance under sand which is exposed to light against glass. Has never done anything but exist there. Never caused me any trouble.
P-Dub
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And I should have added, it shouldn't be an issue, as most people and I have or have had similar microbial growth in the sand bed to varying degrees. I eliminated it by eliminating my deep sand bed. I go bare bottom now because I prefer sps dominance in my tanks and have so much flow that I would get sand blown out in areas anyhow.
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