Dry Dosing calculator??? - The Planted Tank Forum
 
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post #1 of 6 (permalink) Old 10-02-2014, 05:21 PM Thread Starter
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Dry Dosing calculator???

Some say the recommended parameters are :
N : 10 - 20 ppm
P : 1 - 2 ppm
K : 10 - 20 ppm

I am only looking at N to trying to understand this calculator. Lets say I have a 75 gallon tank and I dry dose a total of 3/4 tsp of KNO3 a week.

According to the calculator I will only have 1.90ppm of N..... So does this mean I have to dose 5 times 3/4 tsp of KNO3 each week to get roughly about 10ppm of N? But then that would put my NO3 at about 40ppm +

That's a lot of KNO3 ... any thoughts or comments appreciated.
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post #2 of 6 (permalink) Old 10-02-2014, 05:30 PM
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N should be understood to be nitrate N (NO3), not total N. You aim for 10-20ppm of NO3, not N.
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post #3 of 6 (permalink) Old 10-02-2014, 06:37 PM Thread Starter
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Quote:
Originally Posted by Solcielo lawrencia View Post
N should be understood to be nitrate N (NO3), not total N. You aim for 10-20ppm of NO3, not N.
Soooo.....We are really looking at N as in Nitrate (NO3) and not Nitrogen (N) ??
If the answer is yes we are looking at N as in Nitrate (NO3) ... then are statements like the one below correct??

"The primary fertilizers are the macro nutrients - Nitrogen (N), Phosphorous (P), Potassium (K), and the micro nutrients – trace elements (Plantex CSM+B, Flourish). Iron (Fe) can also be supplemented if necessary."
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post #4 of 6 (permalink) Old 10-02-2014, 07:22 PM
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I also use dry dosing each day. My favorite calc is the fertilator:

http://www.aquaticplantcentral.com/f...fertilator.php

It will let you type in how many tsp to add to your tank and show you in PPM how much of each nutrient you are adding. Great to vary what you dose based on how your plants react.


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post #5 of 6 (permalink) Old 10-02-2014, 07:25 PM
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Quote:
Originally Posted by December View Post
Soooo.....We are really looking at N as in Nitrate (NO3) and not Nitrogen (N) ??
If the answer is yes we are looking at N as in Nitrate (NO3) ... then are statements like the one below correct??

"The primary fertilizers are the macro nutrients - Nitrogen (N), Phosphorous (P), Potassium (K), and the micro nutrients trace elements (Plantex CSM+B, Flourish). Iron (Fe) can also be supplemented if necessary."
Yes, the statement is correct.

N is not in free form. It must be bound to something, such as NH3, NH4, NO3, N2. It's up to plants to break it down.
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post #6 of 6 (permalink) Old 10-02-2014, 07:49 PM Thread Starter
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Quote:
Originally Posted by klibs View Post
I also use dry dosing each day. My favorite calc is the fertilator:

http://www.aquaticplantcentral.com/f...fertilator.php
Awesomeness, thanks Klibs!!


Quote:
Originally Posted by Solcielo lawrencia View Post
Yes, the statement is correct.

N is not in free form. It must be bound to something, such as NH3, NH4, NO3, N2. It's up to plants to break it down.
Gotcha' Thanks Solcielo!!!
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