The Planted Tank Forum - View Single Post - Brown diatoms in mature tank (ARGH!)
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Old 09-29-2012, 03:14 AM   #6
cradleoffilthfan
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When was the last time you put in the root tabs, they only last 3 to 6 months. Didn't know if you had replaced them at all. Also, when the bulbs in light fixtures go bad sometimes you will get a little diatom bloom. Test phosphates and nitrates and make sure they are within a good range.
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