Fertilizer GH and KH - The Planted Tank Forum
 
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post #1 of 6 (permalink) Old 11-29-2006, 04:25 AM Thread Starter
 
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Fertilizer GH and KH

I was wondering what kind of effect a typical dosage of fertilizers has on the GH and KH readings in a tank.

Thanks
Adam
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post #2 of 6 (permalink) Old 11-29-2006, 05:14 AM
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Define "fertilizers"?

Craig

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post #3 of 6 (permalink) Old 11-29-2006, 06:05 AM Thread Starter
 
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A single or blended substance containing one or more recognized plant nutrient(s) which is used primarily for its plant nutrient content and which is designed for use or claimed to have value in promoting plant growth.
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post #4 of 6 (permalink) Old 11-29-2006, 12:14 PM
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Ok, I will make it easier for you.

What fertilzers do you have in mind?
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post #5 of 6 (permalink) Old 11-29-2006, 02:49 PM
 
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It will help to become familiar with the basics of fertilization

Introduction to Fertilizers for a Planted Tank

And of water chemistry

Aquarium Chemistry, pH, gH, and kH relationship

A popular comprehensive regimine for fertilization is here:

Estimative Index Dosing Guide - Aquatic Plant Central- aquascaping...a living art
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post #6 of 6 (permalink) Old 11-29-2006, 03:39 PM
 
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I'll take a stab at this one.

Dosing NPK (if you use KNO3, KH2PO4, and K2SO4) will not affect GH or KH.

If you dose Calcium and/or Magnesium you will increase GH.

If you dose Calcium Carbonate specifically you will increase both GH and KH.

And if you dose any bicarbonates (not likely) you will increase KH.
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