The Planted Tank Forum - View Single Post - Do I need ferts?
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Old 11-15-2012, 02:15 AM   #2
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Yes, you cannot keep up the plant growth without fertilizers. Did you use any slow release products under the substrate?

Do you have fish or shrimp in the tank? Fish food contains enough nutrients for a low tech tank, mostly, but not enough for higher light, and pressurized CO2.
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