Macro EI dosing, Fluval Edge, 591 mL (20 oz) solution help - The Planted Tank Forum
 
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post #1 of 2 (permalink) Old 08-31-2015, 04:52 PM Thread Starter
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Hi,

I'm trying to figure out the macro dosing for my Fluval Edge (6g / 23L) and need some help on the calculations.

I plan to do the dosing regime of EI (3x/week macros and 3x/week micros) but I need help on making a 500 mL macro solution.

I have these dry ferts:
KNO3
K2SO4
KH2PO4

If I have a 591 mL solution (20 oz water bottle), how much of each dry ferts do I need to dissolve in order to dose 5 mL / dose?

I don't need exact numbers, but my (probably horrible) calculation came to:
35g (2 tbsp + 1 tsp) of KNO3
15g (1 tbsp) of K2SO4
5g (1 tsp) of KH2PO4

Is that close or not even? I know dry ferts are normally for larger tanks, but I don't have a large tank anymore and would like to put these dry ferts to use. Thanks!

Nm, just used this: http://www.theaquatools.com/fertilization-calculator


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Last edited by Darkblade48; 09-01-2015 at 03:33 AM. Reason: Please use the edit function for back to back posts
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post #2 of 2 (permalink) Old 08-31-2015, 06:50 PM
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Quote:
Originally Posted by bereninga View Post
Hi,
I know dry ferts are normally for larger tanks, but I don't have a large tank anymore and would like to put these dry ferts to use. Thanks!
Adding dry ferts directly to the aquarium is indeed better suited for large tanks but using dry ferts to make a solution is a very good way to get some cheap fertilizer.
I see you've found you answer, i used the same calculator to calculate my solution
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