Diatoms / Algae Problem - Please Help

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What are your parameters ?
What flow do you have in the tank ? and What filtration you using ?
 

dallasg

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generally in my exprience is that is from an increase in silicates and possibly phosphates, your testkit might show 0 but i would run GFO for a few days
 

dallasg

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its a phosphate and silicate remover
 

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