Best 'trace Elements' Mix To Use With Shrimp?

[Schmill]

Hi, I've been looking at getting the dry fert powders, and have looked at both Aqua Essesntials, and also Garden Direct.
All in all the Potassium Nitrate and Potassium Phosphate powders are the same (I think), but cheaper at Garden Direct.
However the issue comes with the Trace mixes:

Boron 1.06%
Copper 0.23%
Iron 8.2%
Manganese 1.82%
Molybdenum 0.15%
Zinc 1.16%

500g @ £22.99

Boron 0.88%
Copper 1.7%
Iron 3.35%
Manganese 1.7%
Molybdenum 0.023%
Zinc 0.88%

500g @ £14.95

Firstly, Garden Direct seems to have more copper content, but everything else is at lower values, what makes up all the 'unlisted' part of these mixes?
Based on these contents is the Aqua Essentials a 'better' mix?
Also I have Cherry Shrimp in my tanks so would that be another reason to go for the mix with the lower copper content, or once in the tank is the copper so insignificant as to have no effect anyway?

Thanks all

 

[bow1]

I use the aqua essentials trace with no problems with my cherry and ammano shrimp.

 

[aaronnorth]

While both mixes are fine to use the AE mix is more suited to an aquarium (obviously) rather than terrestial plants which garden direct sells for.

The lower copper content puts you on the safe side of things.

 

[plantbrain]

Just like medication and foods, dose makes the poison, shrimp need copper, so do we etc, but we and inverts can be killed by too much.
We get it, like the shrimp, through diet mostly.

The traces really are very low and should ever have any adverse effect on shrimp.
I've dosed 10X the suggested amounts for years without issues, on Blues, Crystals, cherries, Amano's.

So that's pretty high, if it's bad for them, I see no evidence that it is.
They breed like flies.

I gave a bunch away recently.

Must be the poisoning by copper that keeps them breeding and so red?
Most of the advice on shrimp are based on myth, few have really kept and done long term breeding and fewer have done any testing on them.
Just keep that in mind when reading, many claim all sorts of things, but rarely have they done the opposite to test to see if what they say is true, they will not risk their live stock or set up a test tank to answer such questions,m so they really and honestly do not know and get puffy when you question them. Instead of seeking the truth of the matter, just say they do not know etc, it becomes an ego defense.
All you say is that "you not are sure, but this is what worked for me, other might find different parameters and are able to keep them."
That's all you can say, unless you are willing to do a real test and measure this stuff. I already know basic parameters because I've had them without any special treatments with fish, plants etc, they breed and I have plenty of fry over long time frames. I know what I've been doing/dosign this whole time.

They do fine.

These other folks have not tested anything out of fear.
So who knows more and can say more about such effects?
That's a clear choice.

Regards,
Tom Barr