1 year ICP results ALL FOR REEF

[Pod_01]

In the video the presenter mentions that sample contents may precipitate out of the solution.

No idea which elements of any would be affected by this, much less Zinc specifically.

I honestly am not seeing how that can happen.
Unless the sample had elevated calcium, alk, pH precipitation is not just going to start for no reason.

Maybe it was genetic statement, this can possibly happen under some extreme conditions…

Usual suspects for precipitation are calcium, magnesium, phosphate…
Zinc will bind as Randy mentioned…

 

[Otago]

I honestly am not seeing how that can happen.
Unless the sample had elevated calcium, alk, pH precipitation is not just going to start for no reason.

Maybe it was genetic statement, this can possibly happen under some extreme conditions…

Usual suspects for precipitation are calcium, magnesium, phosphate…
Zinc will bind as Randy mentioned…

If the sample freezes this can happen, the brine that hasn't frozen can form precipitates. If the sample tube is full then the brine can also leak out.

Just like you say though, these are extreme conditions, but they are possible if shipping in winter.

 

[Randy Holmes-Farley]

If the sample freezes this can happen, the brine that hasn't frozen can form precipitates. If the sample tube is full then the brine can also leak out.

Just like you say though, these are extreme conditions, but they are possible if shipping in winter.

We had Triton test that and they did not find a change, but freezing is a concern if the sample tube is filled too full, pushing material out of the tube. Oceamo gives instructions to avoid that by leaving an air space in the tube.

 

[Otago]

We had Triton test that and they did not find a change, but freezing is a concern if the sample tube is filled too full, pushing material out of the tube. Oceamo gives instructions to avoid that by leaving an air space in the tube.

Thanks for the correction, do you know if it was because the precipitates went back into solution or there were no precipitates formed ?

 

[Randy Holmes-Farley]

Thanks for the correction, do you know if it was because the precipitates went back into solution or there were no precipitates formed ?

My concern at the time was formation of calcium carbonate, which would not redissolve if it was aragonite or calcite. But apparently the crystal form that dominates at low temps is ikaite, which will redissolve when warmed.

I will noe that Triton was not using icp-ms at the time so some trace elements were not tracked, being below the detection limit.

 

[AKReefing]

Icp company targets and ranges rarely if ever show justification of those targets.

So where do they get those targets and ranges from? Does an actual list of targets and ranges exist? If not, then what is the justification to conduct ICP testing at all?

 

[Randy Holmes-Farley]

So where do they get those targets and ranges from? Does an actual list of targets and ranges exist? If not, then what is the justification to conduct ICP testing at all?

I cannot say how they determine their ranges, but there are natural range levels in the ocean, though for trace elements they can vary by location. Some folks and supplement companies have opinions on what works best for them and their customers.

 

[AKReefing]

I cannot say how they determine their ranges, but there are natural range levels in the ocean, though for trace elements they can vary by location. Some folks and supplement companies have opinions on what works best for them and their customers.

Has anyone compared those opinions to ICP recommended ranges and various reef ranges? Seems like this might be available to those in the scientific community.

TM claims their salt contains 'all major and minor elements in the exact proportions found in tropical sea water." Notwithstanding the variations in different bodies of seawater, what's keeping them from listing all of the elements and the proportions?

 

[Randy Holmes-Farley]

Has anyone compared those opinions to ICP recommended ranges and various reef ranges? Seems like this might be available to those in the scientific community.

TM claims their salt contains 'all major and minor elements in the exact proportions found in tropical sea water." Notwithstanding the variations in different bodies of seawater, what's keeping them from listing all of the elements and the proportions?

Nothing is keeping them from doing it, but I understand why they do not. Since analytical testing at the hobby level is not perfect, should they have to replace someone’s bucket because they got a result that didn’t match the claims or claimed range, even if it’s a testing error?

 

[805reeftank]

30 day ICP update: couple observations

I made some of Randy’s diy calibration fluid and set my refractometer at 1.026 and set my salinity at 1.024-1.025 just in case I screwed up on the solution. So I feel comfortable moving my salinity up to the 1.026 now.

Iodine: my iodine shot up quite a bit, could be 2 things the isol8 or my carbon it was barely flowing any water because it was clogged. On the ICP says active carbon can bring down iodine.

Zinc: concerning just about doubled think I’m going to put a ploy filter see if it soaks up the zinc.

Just about everything elevated so I think I’m going to pull the isol8 or reduce by 1/2.

RODI zinc is now gone, two things I changed. I added the flush valve on the membrane. And I collected straight from the RODI line instead of the holding container. So either the jug is leeching zinc or the flush did the trick we’ll see on the next ICP I’ll pull from the same jug with flushed water.

To my eye my lps seem fuller/fluffy and that was immediate after the isol8 and salinity change looking back I would have liked to adjusted the salinity first but oh well. Color seems to getting better but that’s just my eye I’ll post pics for judgment.

Conception my dose has gone up from 50ml to 65ml over the last 30days. Isol8 helping? Who knows.

RODI

 

[Randy Holmes-Farley]

Iodine: my iodine shot up quite a bit, could be 2 things the isol8 or my carbon it was barely flowing any water because it was clogged. On the ICP says active carbon can bring down iodine.

What company is this icp? That info about iodine binding to GAC is not correct, and suggests the company posting it is not thinking very deeply.

 

[areefer01]

What company is this icp? That info about iodine binding to GAC is not correct, and suggests the company posting it is not thinking very deeply.

Based on the format that appears to be from ATI. I went back through my data and see that I had high iodine back in May of 2024. Their recommendation under the Iodine field was to use activated carbon. Since I am only using the test results for trending I did not act on their recommendation.

I do not mean anything by that other than I recall these conversations back on Reef Central in the day so just maintained my course. Next ICP result set it was down (197 -> 98). Not sure why I saw the blip but it has happened a few times over the years

 

[805reeftank]

What company is this icp? That info about iodine binding to GAC is not correct, and suggests the company posting it is not thinking very deeply.

Ati

 

[805reeftank]

Based on the format that appears to be from ATI. I went back through my data and see that I had high iodine back in May of 2024. Their recommendation under the Iodine field was to use activated carbon. Since I am only using the test results for trending I did not act on their recommendation.

I do not mean anything by that other than I recall these conversations back on Reef Central in the day so just maintained my course. Next ICP result set it was down (197 -> 98). Not sure why I saw the blip but it has happened a few times over the years

Ati is correct I already run carbon and it was very lite flow through the carbon. I put new carbon we’ll see what happens

 

[Randy Holmes-Farley]

Based on the format that appears to be from ATI. I went back through my data and see that I had high iodine back in May of 2024. Their recommendation under the Iodine field was to use activated carbon. Since I am only using the test results for trending I did not act on their recommendation.

I do not mean anything by that other than I recall these conversations back on Reef Central in the day so just maintained my course. Next ICP result set it was down (197 -> 98). Not sure why I saw the blip but it has happened a few times over the years

I understand that it is very long established misinformation that just gets repeated and repeated around the internet. That’s what I meant by not thinking deeply.

 

[Randy Holmes-Farley]

Ati is correct I already run carbon and it was very lite flow through the carbon. I put new carbon we’ll see what happens

I’m not holding my breath in anticipation. It’s just misinformation that is repeated without thinking. Someone long ago read about iodine binding by GAC as a measure of pore area, didn’t have the slightest idea what was going on, and misinterpreted it to think that GAC must bind iodide or iodate from seawater. It doesn’t.

We know it is false, both by chemical understanding, and from measurement. Christoph showed at Oceamo that GAC does not bind significant iodine from seawater.

Dosing iodine when using activated charcoal

Evening everyone! So as the title says, I am still contemplating occasionally dosing iodine, but I keep activated charcoal running. Now I know that the charcoal should not run when dosing iodine, but my question is, for how long should I stop it?

www.reef2reef.com

 

[805reeftank]

We know what will happen. It’s just misinformation that is repeated without thinking. Someone long ago read about iodine binding by GAC as a measure of pore area, didn’t have the slightest idea what was going on, and misinterpreted it to think that GAC must bind iodide or iodate from seawater. It doesn’t.

We know it is false, both by chemical understanding, and from measurement. Christoph showed at Oceamo that GAC does not bind significant iodine from seawater.

Dosing iodine when using activated charcoal

Evening everyone! So as the title says, I am still contemplating occasionally dosing iodine, but I keep activated charcoal running. Now I know that the charcoal should not run when dosing iodine, but my question is, for how long should I stop it?

www.reef2reef.com

So with this knowledge the iodine elevation is from the isol8. Nothing else has changed dosing wise.

 

[Randy Holmes-Farley]

Ati

Thanks for the link. The GAC won’t be the answer, but it will decline in its own if you don’t add it.

 

[Randy Holmes-Farley]

I don’t actually think it is high enough to do anything except not add more.

 

[805reeftank]

I don’t actually think it is high enough to do anything except not add more.

This is what’s in isol8 do you think you I should stop it to reduce the iodine and zinc? I’m dosing the recommended dosage for 50 gals which is 2 drops per day