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Sand vs sand vs sand....

This is a discussion on Sand vs sand vs sand.... within the Beginner Freshwater Aquarium forums, part of the Freshwater Fish and Aquariums category; --> Originally Posted by patadams66 Umm what's this about black sand? I def have some Showing on the glass...is that bad? What should I do ...

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Sand vs sand vs sand....
Old 12-21-2012, 04:23 PM   #31
 
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Quote:
Originally Posted by patadams66 View Post
Umm what's this about black sand? I def have some
Showing on the glass...is that bad? What should I do about it?
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There is a difference between "black" as I think DKRST meant it, and the normal darkening that I have just below the top of the substrate along the front on all my tanks, be they gravel, sand or Flourite. A few times I have pushed the siphon down and pulled up all the gravel, and this "film" is on the glass and will come off, usually with a light scraping. I've never bothered with it.

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Old 12-21-2012, 06:14 PM   #32
 
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Opps, sorry I wasn't specific enough! The "black sand" I was referring to are areas in my play sand tanks that start getting anaerobic and develop dark black areas (low O2 and starts getting black from hydrogen sulfide-generating bacteria), It's just aesthetically ugly to me, that's why I stir that particular area up - it oxygenates that area and eliminates the o2-poor spot, at least temporarily. As I said, I like a deep sand substrate (3-4") to support the roots of my swords and that leads to more potential issues with deep compacted sand areas. I have never had any issues in terms of hydrogen sulfide/compacted sand problems even when I don't regularly de-compact the sand in my tanks.
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