Help with fertilizers pmdd? - The Planted Tank Forum
 
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post #1 of 3 (permalink) Old 01-25-2004, 04:10 AM Thread Starter
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I have a 55 gallon planted tank and a 20 gallon planted tank with DIY CO2. I have 2 wpg (I may increase the lighting sometime). I occaisionally add some of the seachem's flourish line (flourish, flourish iron, flourish potassium, flourish trace). However the flourish products are expensive, and I don't know how great they are. Are the pmdd supplies on this site http://www.gregwatson.com/ any good?

I guess what I'm asking is what fertilizers do I need to buy, how do I dose them, and how much do I dose, and how do I know if I've dosed the right about?
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post #2 of 3 (permalink) Old 01-25-2004, 04:54 AM
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Flourish (for traces) and Flourish Iron serve me very well. Could be I am underdosing, but a bottle lasts a long time. Flourish trace is only diluted Flourish (I heard), you could skip that.

To provide potassium, it is more economical to use K2SO4, which you could order at the site you mentioned. KNO3 would provide nitrate. A tiny little bit of KH2PO4 can help raising phosphate levels, if appropriate.

I don't have experience with PMDD, Plantex, etc, so far I am very happy with Flourish.


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post #3 of 3 (permalink) Old 01-25-2004, 03:01 PM
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Flourish trace is basically tap water IMHO. It's not even diluted Flourish.

You need to know your nutrient levels in the tank. If you have a water source that has natural nitrates then you don't need to buy the KNO3. Same goes for the phosphates. You should buy the Plantex for traces and if needed you can buy the K2SO4 for potassium. See my FAQ for more info
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