So I Bought some N-P-K. Now what? - The Planted Tank Forum
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post #1 of 2 (permalink) Old 09-17-2004, 05:50 AM Thread Starter
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So I Bought some N-P-K. Now what?

I just bought some flourish brand NPK ferts and flourish comprehensive plant supplement. I know that my tank needs K after every water change. I have the targeted amount of phosphates which is .5 ppm(tested by my seachem phospate kit). One problem I have is my nitrates read 0ppm. I believe it needs to be at 5ppm or so. How do I raise it? Do I use the flourish nitrogen and count on my filter to turn into nitrates? If not, then what do I use the nitrogen for? THanks for taking a look at my newbie question. =]
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post #2 of 2 (permalink) Old 09-17-2004, 11:13 AM
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Flourish N is I believe is 1-half a safe ammonium compound and 1-half nitrate. Plants will take nitrogen in other forms then nitrate (Sea Chem says ammonia is more readily utilized). Therefore, you would dose half the nitrate that you would normally dose with KNO3. The instructions should be on the bottle anyway.
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