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Old 07-06-2012, 12:51 PM   #1
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Diatoms????

My tanks over a year old and I have what looks to be like diatoms......... The black stuff is chemipure the bag ripped and it got sucked in the tank. Yay. Is it?
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Old 07-06-2012, 01:27 PM   #2
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Looks a bit reddish to me. But if it's brown and not slimy, then yup it's Diatoms. I get them in my tank from time to time if I stir up the sand and expose sand that still has silicates that were never consumed during the first diatom bloom.

Any major sand movement lately?
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Old 07-06-2012, 01:38 PM   #3
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I changed my substrate completely about 2-3 months ago. My nitrates are ridiculous but if I move water close to then they dissipate off the sand. What do you think? I'm bringing down the nitrates with vodka dosing so hopefully they'll be in check soon.
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