The Planted Tank Forum - View Single Post - Diatoms in a mature tank?
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Old 08-31-2012, 09:26 AM   #9
reiben
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Did you disturb the substrate? Released ammonia from substrate is often the cause. After every re-scape, you need to change at least 50% of water.
Secondary, diatoms are often in tanks with too much light and not enough CO2 supply. So cut the lights down or increase CO2 supply (or both).
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