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Old 07-12-2009, 01:12 PM   #11
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Well Frank, looking over your stock list I would say you are good to go. Sit back and watch the grass grow.
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Old 07-12-2009, 02:26 PM   #12
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I personally think it`s anerobic bacteria. Everyone if they dug deep in their sand would find out they have it. Anerobic bacteria is good for consuming nitrates. It is found in oxygen starved areas like deep in sand beds and under LR. I personnally think it`s a good thing. JME
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Old 07-12-2009, 02:40 PM   #13
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Well as long as it is good.. Then no worries... Thanks everyone now I can take a deep breath...
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Old 07-12-2009, 03:38 PM   #14
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Um, sulphur dioxide from anaerobic conditions Is extremely toxic. If new fish suddenly release it you can have deaths. You should aerate the substrate or just stir it and remove the black stuff!
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Old 07-12-2009, 03:44 PM   #15
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Filtration Basics by Doug Wojtczak - Reefkeeping.com

If you read the section titled denitrification you`ll see the purpose of anerobic bacteria and why it`s good in your tank.
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Old 07-12-2009, 03:49 PM   #16
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some anaerobes are good and some (ESP that develop before cycling) aren't--but if the black is sulphur dioxide it is poisonous in any concentration.
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Old 07-12-2009, 03:54 PM   #17
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This is the quote. I`m not doubting you. Alot of people have DSB`s for this reason.

"Since I am discussing bacteria, I will also mention some of the many forms of denitrifying bacteria found in our aquariums: Micrococcus, Pseudomonas, Denitrobacillas, Bacillus and others.Some of these are anaerobic (requiring little or no oxygen) and some are aerobic.The bacterial genus, Thiobacillus, consists of eight species.These particular bacteria utilize organic sulfur compounds such as sulfide, thiosulfate and bisulfite in low oxygen areas as a substrate to reduce nitrate in our aquariums.The bacteria consume the nitrate and convert it to nitrogen gas, which gets released into the air through water movement and aeration.Some suitable substrates for these bacteria are in the low oxygen areas in the center of porous live rock or in the deeper layers of a sand bed."
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Old 07-12-2009, 05:59 PM   #18
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Anerobic bacteria, that's the word I was looking for in my "coffee deprived brain" in the morning. I'm a slow started..Thanks Mike
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Old 07-12-2009, 06:48 PM   #19
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Tank, my FW sand does the same thing, its under the rocks, I removed over 18 rocks due to them turning black themselves, like jet black.


I stir with life as well as a hair pik super glued to the end of my gravel vac,works best for cleaning sandbeds.

I was told it was bad stuff, I get bubbles from mine as well 55g been set up since two weeks before fathers day.

If you are worried about it, take a chop stick from the side, put the gravel vac into the sand, stir with stick under the vac, any bubbles will be directed out of the water column, just dont breath over the end of the hose, the bubbles it does release smells like poo.
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Old 07-12-2009, 08:28 PM   #20
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If you are doing a DSB, do not stir the sand. Let it be and wait for your CUC to do the mild stirring. You will release more problems with stirring then not.
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