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EI Dosing - substitute for Chelated Trace Elements

simonm74

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3 Oct 2010
Messages
41
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.
 

Zeus.

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1 Oct 2016
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Yorkshire,UK
1589814016036.png
 

Zeus.

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Yorkshire,UK
More expensive but you could use seachem flourish for micros.
1589817532517.png


But for the cost of 500ml of it it nearly covers a lifetime supply of Solufeed TEC trace ferts and you fert mix will also have ample trace ferts in the mix
 

Zeus.

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when you compare them side by side

1589821202258.png


However the true cost is still hidden

1589821382488.png


The cost at the end are based on my 500l tank

Quite shocking when your compare DIY dosing cost for same tank

1589821578516.png


And the 'double triple' dose of TNC complete :eek:

All upcoming features of V1.9 Fert Calculator
 

Basviola

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3 Apr 2019
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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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Location
Denmark
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.
 

simonm74

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3 Oct 2010
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Do I make it up at 1 tsp per 500ml as with the APFUK trace elements?
 

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