I sent Tropic Marin K+ for ATI ICP RO/DI testing

[Miami Reef]

I added about 1 mL of Tropic Marin K+ and filled the remaining 14 mL tube with RO/DI water.

I sent it as the RO/DI test.

I don’t know if this is useful; I was curious and didn’t need to test my freshwater because it always comes back clean.

Edit: looking back at my ICP history with OCEAMO, my RO/DI comes out near perfect, but sometimes there could be some silicate. I would ignore the silicate reading in this test; it’s likely from the source water.

 

[Randy Holmes-Farley]

It’s useful in several contexts, including having a sense of how much of what is fused, and for a diy. (Both assuming rough accuracy).

 

[Randy Holmes-Farley]

I’m surprised iron is as low as it is.

 

[Miami Reef]

I’m surprised iron is as low as it is.

The manganese is what surprised me. That seems really high, which isn’t necessarily a bad thing, especially if you keep Goniopora and believe they might require extra.

I was also interested in the silicate.

Also, thank you for your input. I was hoping to get it when making this thread.

 

[WhatCouldGoWrong71]

I added about 1 mL of Tropic Marin K+ and filled the remaining 14 mL tube with RO/DI water.

I sent it as the RO/DI test.

I don’t know if this is useful; I was curious and didn’t need to test my freshwater because it always comes back clean.

I have to do mine next week. I’ll do the A.

 

[Miami Reef]

I have to do mine next week. I’ll do the A.

Awesome! Can you follow the same concentration as me (1mL in the 14mL tube?)

Please tag me in the results or post them here!

 

[WhatCouldGoWrong71]

I’m not worried about my RODI.

Awesome! Can you follow the same concentration as me (1mL in the 14mL tube?)

Please tag me in the results or post them here!

exactly what I planned to do.

 

[spsick]

Thanks for doing that!

 

[Faria]

Tagging along to see what Mr @Hans-Werner will say

I've been dosing AFR and Kalkwasser along with K/A-. ICP came back normal last time.

 

[Luminous74]

I added about 1 mL of Tropic Marin K+ and filled the remaining 14 mL tube with RO/DI water.

I sent it as the RO/DI test.

I don’t know if this is useful; I was curious and didn’t need to test my freshwater because it always comes back clean.

Thank you very much for that! I wonder where the silicate is coming from. Do you use a mixed-bed resin filter for your RODI production, or how do you prepare it? Hans-Werner has already shared some values here before...
Post in thread 'Iron levels in K+' https://www.reef2reef.com/threads/iron-levels-in-k.1071925/post-12858040

I wonder if a comparison would be interesting. But then, what are we actually evaluating? Hans-Werner Balling’s statement or the accuracy of the ICP test?

 

[WhatCouldGoWrong71]

Trust but verify.

 

[Pod_01]

I have a general question, when you spike sample like this and send it for a test. Can the machine actually measure the elevated levels?
For example Mn and Fe should be in the non detectable range, now they are elevated.

So is that actual number or is the machine just saying the value is above max limit. Just curious…

 

[Dan_P]

I added about 1 mL of Tropic Marin K+ and filled the remaining 14 mL tube with RO/DI water.

I sent it as the RO/DI test.

I don’t know if this is useful; I was curious and didn’t need to test my freshwater because it always comes back clean.

Now that you have these concentrations, how often are you dosing and what is the calculated concentration you are obtaining with that dose? Do the concentrations of the elements come close to the suggested concentrations that come with an ICP test?

 

[xiaoxiy]

I have a general question, when you spike sample like this and send it for a test. Can the machine actually measure the elevated levels?
For example Mn and Fe should be in the non detectable range, now they are elevated.

So is that actual number or is the machine just saying the value is above max limit. Just curious…

Would be interesting to send in a serial dilution and see how closely values across the different dilution samples compare to expected dilution ratios.

 

[Mels_Reef]

I added about 1 mL of Tropic Marin K+ and filled the remaining 14 mL tube with RO/DI water.

I sent it as the RO/DI test.

I don’t know if this is useful; I was curious and didn’t need to test my freshwater because it always comes back clean.

Great work!!

Do you have the Strontium reading? I’m just looking at the listed ingredients for “K” on the product site and that is also in the additive.

 

[braaap]

Haha I’ve done this for other things. I only test my ro/di once a year and do 3 or so ICP a year. Usually I test family members well water lol

 

[Miami Reef]

Thank you very much for that! I wonder where the silicate is coming from. Do you use a mixed-bed resin filter for your RODI production, or how do you prepare it? Hans-Werner has already shared some values here before...

I use a mixed bed resin and always change it out before it fully depletes.

However, OCEAMO detected silicate in my RO/DO in December of 2024

Interestingly enough, an ICP with Oceamo in August 2024 showed undetectable silicate.


I would just ignore the silicate reading from the ICP I sent in the first post of this thread. It’s very challenging to remove it with RO/DI.

 

[Miami Reef]

Great work!!

Do you have the Strontium reading? I’m just looking at the listed ingredients for “K” on the product site and that is also in the additive.

The RO/DI test didn’t include strontium, unfortunately.

 

[Miami Reef]

Now that you have these concentrations, how often are you dosing and what is the calculated concentration you are obtaining with that dose? Do the concentrations of the elements come close to the suggested concentrations that come with an ICP test?

I dosed a lot of trace elements recently, but the ICP, as alway, show zero.

About 2 weeks prior to the ICP I added over 300 mL of Trace K+ my 260 gallon tank spread out. I thought I’d for sure get trace elements detectable.


Here’s my tank result.

I didn’t add any A- for a while because I ran out and was completely out of stock for a month at BRS when I wanted to buy it.

 

[Miami Reef]

Haha I’ve done this for other things. I only test my ro/di once a year and do 3 or so ICP a year. Usually I test family members well water lol

I sent my tap water once lol.