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Old 07-11-2009, 02:06 PM   #1
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Smile Used Sand Turning Black

Alright I just switch over to my new 72 gallon about 2 weeks ago. The sand that was giving to me was from an established Tank for over 2 years. When I got the tank the sand was still in the tank with water still in it. it sat for about a week till I had the time to rinse all the detrius out. Well that took awhile to do. After cleaning and putting it back into the tank I started switching everything over. I put the sand in my established tank over it. Today when I was cleaning the Refugium out I notice under the Tank that it was turning Black. Then I notice on the side of the Tank it was also turning black. Yesterday I moved around on one my LR and the bottom of it was also Turning Black also like if it Raw Sewage in the Tank. Should I be worried about it? or should I just leave it and let nature take it's course? Or Change it all out completely? Let me know...
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Old 07-11-2009, 09:23 PM   #2
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Anyone?
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Old 07-12-2009, 11:14 AM   #3
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How did you clean the old sand? Did you thoroughly wash it in fresh water? If not, my guess is whatever was alive in the sand (which may not have been much if it sat in just a little water with no circulation or filtration for a week) is dead from being buried and what you see is actually cyano.
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Old 07-12-2009, 12:03 PM   #4
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I'll try to get pictures so you can see what I am talking about... Yeah I clean it thoroughly I got most of whatever I could get out. of the Sand that was givin to me. The sand that was in my system I did not clean it. I just transferred that right over and added the water slwly so I don't cause a huge ammonia outbreak. But anyhow the Sand that's below was the sand that was sitting for a week I basically layered my sand over it. I don't see signs of my sand turning black but that sand that was sitting for a week is turning black.
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Old 07-12-2009, 12:45 PM   #5
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Here are the Pictures of what I am talking about...
This is Under the Tank

Second Shot under the Tank

Here is the Side of my display tank


Lmk if you think that's bad...
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Old 07-12-2009, 12:47 PM   #6
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What you see is Sulfer Dioxide and that is due to dead spots in your sand. Get some sand stirring animals so that the tanks sand can be slowly moved to prevent dead spots.
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Old 07-12-2009, 12:51 PM   #7
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In a few months you will start to see bubbles. That is your DSB in action. Your nitrates are been eated up by bacteria that live in low or no O2 level and the bubbles are the end product which is Nitrogen that will bubble up to the surface and back into the air. complete end of Nitrogen cycle.
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Old 07-12-2009, 12:55 PM   #8
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Sweet... So I should not worried about it being contaminated? Enough said if so I have a Reefs2Go order coming in with about 20 Nassarius Snails and some sand shifting Starfish... Hopefully that will take care if it... Do you know of any other Marine life that would go to the bottom of the Tank?
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Old 07-12-2009, 12:59 PM   #9
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How old is your tank? if you are at the stage that you can get some fish then some gobies would really turn some sand over.
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Old 07-12-2009, 01:07 PM   #10
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It's only 2 weeks old... I had my Tank of over a year the 55Gallon Established. Since switching over to the New 72 Gallon my Tank never cycled becasue I transfered everything over with the same water and sand also Live Rock about 68LB worth which I need to get more... So basically the new one only 2 weeks.
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