Ca and Alk in the same supplement? How does this work?

[Hans-Werner]

ATI's recommendation noted Bromine is elevated. This is also one of the components and/or trace elements in TM AFR. I did not see this elevated in previous tests so pretty sure it is a direct relationship. The value may not be a big deal but figured I would ask.

Thank you for your post and the numbers.
Doing a short calculation might help. The elevation is ca. 32.9 ppm.

The concentration of Br in A- Elements is 173.9 ppm (lower than iodine!). The dilution of A- Elements in All-For-Reef DIY is 1:10 resulting in a concentration of 17.39 ppm Br. To achieve an increase in concentration of 32.9 ppm you would have to dose 1.89 times the water volume of your tank in All-For-Reef DIY without any consumption of Br.

I think we do not have to continue this calculation to see that this is just impossible. Nevertheless, just for fun we can continue this calculation.

When dosing the maximum recommended dosage of 25 ml per 100 l per day (which may be exceeded), you are dosing 25 ml each 100.000 ml per day. To replace the water volume once you need 4,000 days, multiplied with 1.89 times the water volume you get 7560 days or more than 20 years without any consumption, to achieve this elevation in concentration.

I do not know what led to this result of the analysis, but I think the possible error of such kinds of analysis might be strongly underestimated. I think ATI is a very meticulous laboratory. In my opinion each ICP-OES laboratory may have produced errors of similar dimensions after a few years of working. It was noticeable that in forums one week questions about elevated barium in the analyses of a certain ICP-OES laboratory popped up and the next week about a different element in the analyses of another laboratory. Especially certain groups of elements like the earth alkaline metals seem to prone to analytic errors.

 

[User1]

Thank you for your post and the numbers.
Doing a short calculation might help. The elevation is ca. 32.9 ppm.

The concentration of Br in A- Elements is 173.9 ppm (lower than iodine!). The dilution of A- Elements in All-For-Reef DIY is 1:10 resulting in a concentration of 17.39 ppm Br. To achieve an increase in concentration of 32.9 ppm you would have to dose 1.89 times the water volume of your tank in All-For-Reef DIY without any consumption of Br.

I think we do not have to continue this calculation to see that this is just impossible. Nevertheless, just for fun we can continue this calculation.

When dosing the maximum recommended dosage of 25 ml per 100 l per day (which may be exceeded), you are dosing 25 ml each 100.000 ml per day. To replace the water volume once you need 4,000 days, multiplied with 1.89 times the water volume you get 7560 days or more than 20 years without any consumption, to achieve this elevation in concentration.

I do not know what led to this result of the analysis, but I think the possible error of such kinds of analysis might be strongly underestimated. I think ATI is a very meticulous laboratory. In my opinion each ICP-OES laboratory may have produced errors of similar dimensions after a few years of working. It was noticeable that in forums one week questions about elevated barium in the analyses of a certain ICP-OES laboratory popped up and the next week about a different element in the analyses of another laboratory. Especially certain groups of elements like the earth alkaline metals seem to prone to analytic errors.

Thanks. Math is fun :)

My aquarium is 210 gallons and I estimated the total water volume at 170 gallons. The initial dosage using the calculator is 32 ml per day. I am at 37 ml now. As you said impossible :)

Thanks again - have a great day!