Does this mix look right to you? - The Planted Tank Forum
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post #1 of 4 (permalink) Old 04-13-2016, 06:48 AM Thread Starter
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Does this mix look right to you?

This is the EI stock solution mix that I got from the This is for 55gl tank.


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post #2 of 4 (permalink) Old 04-13-2016, 07:04 AM
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I would stay away from CSM+B trace, period. Trace toxicity can develop . Seachem Comprehensive would be a better choice. Simple and less measuring. Since I switched many issues for me have gone away and stayed away! The KNO3 , PO4 mixes are good though, I would stay with those, but I would dose dry not pre mix according to tank volume. My 2 cents
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post #3 of 4 (permalink) Old 04-13-2016, 08:01 AM
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How much is each dose supposed to be?

At 15 ml/dose, calculated for 50 gallons of water:

The KNO3 is about right

154.5 gms into 1000ML =

K - 4.729121148
N - 1.694183108
NO3 - 7.5

Per 15 ml dose


KH2PO4 looks like twice as much

47.0 gm into 1000 ml =

K - 1.070325261
P - 0.847933801
PO4 - 2.6

Per 15 ml dose


CSM-B a bit less

71.5 grams csmb into 1000 ml =

B - 0.04532925
Cu - 0.005099541
dGH - 0.066271865
Fe - 0.37
Mg - 0.079326187
Mn - 0.105957121
Mo - 0.002833078
Zn - 0.020964778

Per 15 ml dose

So that's a bit less than the standard dose of .5 ppm Fe, but still plenty if not too much imho (it would be too much for my tanks)

* used both Zorfox's calculator, and Rotala Butterfly | Planted Aquarium Nutrient Dosing Calculator

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Last edited by burr740; 04-13-2016 at 08:12 AM. Reason: .
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post #4 of 4 (permalink) Old 04-13-2016, 02:35 PM
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No. The numbers are incorrect as burr has pointed out. It appears they are using this calculator which appears to be reporting improper doses.

Substitute the amounts below using 1 liter container and a 20ml dose.

Macro Bottle

KNO3 127.3 gm (approximately 24 1/2 teaspoons)
KH2PO4 19.4gm (approximately 3 1/2 teaspoons)

Each 20ml dose will add the following nutrients,

NO3 7.5 ppm
PO4 1.3 ppm
K 5.26 ppm

Micro Bottle

Plantex CSM+B 79.7 gm (approximately 18 1/2 teaspoons)

Fe 0.5
Mg 0.10719755
dGH 0.089556574
Cu 0.006891271
B 0.061255743
Mn 0.143185299
Mo 0.003828484
Zn 0.028330781

Here is a link that has the calculations already done for common sized tanks, Dry dosing and Nutrient Solution Recipes.
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