SPS RTNing, ATI results. opinions needed

bertoni said:
I'm skeptical about iodine doing much, but it might be an issue. Lots of people run with very low iodine since it is consumed very rapidly and very few people dose.
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I'm as skeptical as the next person, and there is no way I can know for sure it was the iodine dosing, but I believe the evidence for my tank does strongly support it. Alkalinity, nitrates, phosphates and calcium levels stayed constant as I saw coral health in some of my SPS decline. I lost a couple frags to RTN and saw some tissue loss on existing pieces. I bought a potassium kit, but those levels were normal. Then the ICP result comes back with basically everything normal but low iodine levels, then I dosed iodine and saw immediate positive effects.

I think a lot of people that never dose anything also do water changes all the time, which I do not. Maybe for iodine it isn't having a low reading at a point-in-time, but a prolonged deficit is a problem. I'm not sure. And if my iodine levels were low now, presumably they've been low for months since I don't do water changes and didn't dose it previously.

Before I started dosing iodine I did search around to see if there was anybody with a similar situation, and I came across a post by BattleCorals on another forum (which I can't link to) where he says the same thing. I'm going to quote it here because I can't link to it:

9.5 times out of 10 id say its a fluke although I've had a few ICP test reveal smoking guns, the most blaring was extremely low iodine a while back. I was seeing odd tissue issues, and mild but random base recession. I corrected it and did see a significant improvement. This was one of those instances where there were more than one or two pieces affected similarly, and I felt I needed to act more aggressively to solve it. Was just around the time triton came to the states. I'd say if you have a clear culprit then obviously that is a time to react, but when the causes are more elusive, I am way less aggressive in my efforts to solve them.
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It is interesting data, but there are a lot of counter-examples, as well, where iodine dosing didn't seem to do anything. For example, I dosed for a while and never noticed anything when I stopped, although my tank wasn't having problems, so I'm not sure how much that means.
 
I sent in another sample this evening and did a 20% WC.

There isn’t a whole lot of SPS left in my tank, actually not much at all perhaps 4-5 colonies and 10 frags or fractions of colonies just hanging on.
 
bertoni said:
It is interesting data, but there are a lot of counter-examples, as well, where iodine dosing didn't seem to do anything. For example, I dosed for a while and never noticed anything when I stopped, although my tank wasn't having problems, so I'm not sure how much that means.
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I had to order some oddball circuit breakers on amazon and almost bought some iodine but figured with having done 120 gallons of WC in a 150 gallon system in the last week, Iodine was probably no longer a problem.


One thing that stood out to me was my Aluminium which was about 600X NSW values

NSW is 0.09 ug/L mine was 51.29 ug/L. I have no idea how it had gotten that high or what that much aluminum would do.
 
five.five-six said:
I had to order some oddball circuit breakers on amazon and almost bought some iodine but figured with having done 120 gallons of WC in a 150 gallon system in the last week, Iodine was probably no longer a problem.


One thing that stood out to me was my Aluminium which was about 600X NSW values

NSW is 0.09 ug/L mine was 51.29 ug/L. I have no idea how it had gotten that high or what that much aluminum would do.
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Do you use the marine pure blocks?

Ive seen where people have extremely elevated aluminum from running sintered glass media. There is definitely some background data on high aluminum levels in reef tanks. I dont recall anyone hypothesizing negative effects, but im not sure what levels they were dealing with. Would need to do some searching.

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bertoni said:
I'm skeptical about iodine doing much, but it might be an issue. Lots of people run with very low iodine since it is consumed very rapidly and very few people dose.

I'm skeptical about PVC leaching much tin. What tin is used in the product should be bound up quite well, and the situation hasn't changed in years. People have used PVC for a long time.
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I dont disagree. I have just seen some threads about it in the past. I Nlnever bought into it, but never had a sound basis for why. I thought it might be worth mentioning.

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pisanoal said:
Do you use the marine pure blocks?

Ive seen where people have extremely elevated aluminum from running sintered glass media. There is definitely some background data on high aluminum levels in reef tanks. I dont recall anyone hypothesizing negative effects, but im not sure what levels they were dealing with. Would need to do some searching.

Sent from my VS988 using Tapatalk
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I won some of the other brand in a club raffle 3 months ago and put them in. Mostly for coppopod habitat as reccomended by alage barn.

I took them out last night
 
The sintered alumina media might be an issue, but not always. It's been more of an issue for some soft corals, if my memory is correct.
 
And it was also proven that cheap Chinese knockoffs from fleabay is what was causing the elevated aluminum, not actual marine pure.
 
Just strange, I had the same issue with my mixed reef. I was on vacation and neglected water changes. So to stop the progress I Fraged all the tops, did a water change and ran carbon and everything is doing fine now, starting in incrust the plugs. If you think about it I doubt metals built up in the tanks over that time, That only leaves one option.
 
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