EI Dosing - substitute for Chelated Trace Elements

simonm74

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3 Oct 2010
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Hi all,

I use EI dosing - separate macro and micro - which seems to work well enough.

Unfortunately I've run out of dry chelated trace elements, and there seems to be no availability at the moment.

Does anyone know of something I can use instead? I was considering Tropica Premium Fertiliser (the brown one) ?

Thanks in advance,
Simon.
 

Basviola

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Here in Denmark a lot of people use Rexolin.

Making micro fert mix or all in one fert mix.
Also in nutrient-enriched substrate with red clay and spagnum/peat.
 

dw1305

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Hi all,
Here in Denmark a lot of people use Rexolin.

Making micro fert mix or all in one fert mix.
Also in nutrient-enriched substrate with red clay and spagnum/peat.
My guess would be that all the “specialist” bespoke fertiliser mixes use a commercial <“horticultural”> trace element mix as their base.

The producers know that every ion is the same as every other ion in <“solution”>, the conjurer’s trick is to persuade the punter otherwise.

Cheers Darrel
 

Basviola

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What is used
Which one in the brand do they normally use for their tank ?
What is used is Rexolin APN. - Many just call it rexolin, did not know there was a wide selection.

Bor (B) 1,1 %
Kobber (Cu) 0,25 %
Jern (Fe) 6,0 %
Mangan (Mn) 2,4 %
Molybdæn (Mo) 0,25 %
Zink (Zn) 1,3 %

8g. to 500 ml. water
Dosage: 5 ml to 50 L of aquarium water per day. week
 

Zeus.

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What is used


What is used is Rexolin APN. - Many just call it rexolin, did not know there was a wide selection.

Bor (B) 1,1 %
Kobber (Cu) 0,25 %
Jern (Fe) 6,0 %
Mangan (Mn) 2,4 %
Molybdæn (Mo) 0,25 %
Zink (Zn) 1,3 %

8g. to 500 ml. water
Dosage: 5 ml to 50 L of aquarium water per day. week
I will run those figures though my calculator and get the yeilds per dose
 

Basviola

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I will run those figures though my calculator and get the yeilds per dose
I will be very interested in that! Please post what you calculation would suggest for a standard daily EI dose with would be, when separating in macro and micro dosing days.
 

Zeus.

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I will be very interested in that! Please post what you calculation would suggest for a standard daily EI dose with would be, when separating in macro and micro dosing days.
A comparison gram for gram dose for dose with APFUK trace and Solufeed TEC

1589872391278.png
1589872422929.png


So a little lower in Fe, higher in Mn and Higher in Mo

However we are talking about 'trace amounts' all the same and as long as we don't exceed any toxic levels and the plants are not nutrient limited is looks a great source of trace elements 'if' the price is right
Obviously it tends to be the [Fe] that dictates the amount of the trace we add to suit any regime, as Fe is the trace nutrient the plants need the most out off the trace elements, so it look like more of the Rexolin than APFUK will be needed to hit the Fe ppm target, but 8grams per 500ml sounds about right (off top of my head)

We will incorporate it into the fert calculator so you can use it for any fert regime Macro/Micro mix or AIO solution :thumbup:
 

ian_m

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Solufeed Tec is replacement for Solufeed B which is the micro most people used, at least from AquariumPlantFood. Difference is TEC uses potassium (and ammonium) based EDTA rather than sodium based EDTA to reduce the sodium load in the fertiliser. As for use in fish tank, probably makes no difference, as being used very dilute anyway.
 

Zeus.

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Yorkshire,UK
1589896652106.png

1589896693385.png

1589896728040.png


If aiming for 0.5ppm Fe
1589896652106.png

1589896870340.png

1589897335766.png


or

1589897042825.png

1589897105416.png

1589897138480.png


(I need to double check those figures- but its about what I expected)
 
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