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Discussion Starter · #1 ·
Hey folks,

I made my own trace mix.
I was able to obtain DTPA FE 11%. The rest of my mix is comprised of Manganese Sulfate Monohydrate, Zinc Sulfate Monohydrate, Copper Sulfate Pentahydrate, Boric Acid, Sodium Molybdate Dihydrate.

The following table represents my percentage analysis:

Chemical Salt (Trace %)Amount of Chemical Salt (Amount of Trace)Trace Element Percent
of Total Weight
DTPA Fe (Fe 11%)170g (18.7g)8.29%
MnSO4.H2O (Mn 32%)29g (9.28g)4.11%
ZnSO4.H20 (Zn 35%)3.1g (1.085g)0.48%
CuSO4.H20 (Cu 25%)1.15g (0.2875g)0.13%
H3BO3 (B 17%)22g (3.74g)1.66%
Na2MoO4.2H20 (Mo 40%)0.45g (0.18g)0.08%
Total225.7g

My tank is 400L while my water is 8.1PH which falls to 7.1PH after CO2 injection.

If I follow the EI standard 1ppm of Fe as my proxy, then I should be dosing 132mg of Fe.
However, General Dosing Recommendations for 400L is ½ Teaspoon, which according to my mix ratio is 249mg of Fe (1.89x the proxy).
I could also just dose 1.25x to make sure I am not short on traces, which is 165mg of Fe.

Which dose would you follow? The proxy? The General Dosing Recommendation? Or 1.25x?
Also, Can I get some suggestions on how to improve my current mix?
 

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Standard EI is .2 ppm Fe 3x / week. Up until a few years ago it was .5 ppm 3x week. You still find the .5 recommendation listed in many places. The dry dosing amout you found is probably for a .5 dose. Like Encode said play around with the calculator.

Personally I find a weekly total of .4-.5 works best. Of course some tanks need more or less but I would err on the low side of EI
 

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biOrb LIFE 45 L, planted, EI dosing, CO2 injected; ADA Cube Garden 45F, planted, EI dosing, low tech
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A popular one here in the UK is 'Chelated Trace' from APSUK Chelated Trace Elements - Fertilisers which I would have expected to be on Rotala Butterfly, but I don't see it there. It works out to:
Dry powder mixWeekly in tank ppm
Fe 8.2% (EDTA Chelated)0.590
Mn 1.82% (EDTA Chelated)0.131
Zn 1.16% (EDTA Chelated)0.084
B 1.05%0.076
Cu 0.23% (EDTA Chelated)0.017
Mo 0.15%0.011
 

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There is no standard EI dose for the smaller micros, it was mostly developed using csm+b with Fe as proxy

3:1 is probably too much B, 5:1 is better, although there is no carved in stone best Fe:B for aquariums

Here's my recipe
Fe dtpa - .1 ppm
Fe gluc - .05 ppm
Mn - .029 ppm
B - .027 ppm
Zn - .025 ppm
Cu - .0019 ppm
Mo - .0011 ppm
Ni - .00025 ppm

I dose about half those amounts daily, or most days. Dosing 3x week use the full amounts
 

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Discussion Starter · #8 ·
There is no standard EI dose for the smaller micros, it was mostly developed using csmb.

3:1 is probably too much B, 5:1 is better, although there is no carved in stone best Fe:B for for aquariums

Here's my recipe
Fe dtpa - .01 ppm
Fe gluc - .05 ppm
Mn - .029 ppm
B - .027 ppm
Zn - .025 ppm
Cu - .0019 ppm
Mo - .0011 ppm
Ni - .00025 ppm

I dose about half those amounts daily, or most days. Dosing 3x week use the full amounts
I think this is a delicious green recipe. Thanks for sharing :p
 
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