The Planted Tank Forum - View Single Post - Activated carbon n Ferts?
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Old 02-22-2013, 06:13 PM   #7
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Carbon is really helpful at startup probably thru the first few months since it's another way to remove dissolved organics like HD Blazingwolf stated. It's effect on ferts and plants is way over-stated especially if your relying on the inorganic salts that most of us put in. Once the tank is especially with a good bio filter you might not need it, but it won't hurt.
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