Throwing out the Marine Pure?

CurtnStac

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So I just recently read a post on here about Marine Pure leaching aluminum. Even though I don't see any negative effects in my tank, I'm ready to toss the Marine Pure. Anyone else feeling the same?
 
Not cool that they kinda rigged the test to see if they did leach aluminum into the saltwater by dosing the saltwater to be higher than normal saltwater concentrations of aluminum. Not cool. As you add excess aluminum to the water it will precipitate excess aluminum and to the uninformed reader "reduce" aluminum in the water column. Not cool.
 
what the heck? I’m running it and don’t think I have any issues. There are a lot of people running this. Looks like I need to find that link and do some more research
 
Yeah I threw away my black boxes once brs told me they were junk even though I was getting great results and I also discarded my aluminasilicate block made by marine pure even though I was having great results because the internet told me I should.

Where did BRS say black boxes were junk?
 
I use Marine Pure and I have no indications of Aluminium leaching out. I think it's just another internet myth.

lol

Did you measure aluminum? If not, what indications do you not have?
 
Yeah I threw away my black boxes once brs told me they were junk even though I was getting great results and I also discarded my aluminasilicate block made by marine pure even though I was having great results because the internet told me I should.

Hard to not be sarcastic to such a hyperbolic comment.

The "internet" didn't tell you to discard it. Someone on the internet might have, just as someone on the internet might claim there was no issue. Who is right?

Some people on the internet say tap water is OK. Some say it is not good.

There's no reason to assume both cannot be right at the same time.

A deeper dive into these sorts of discussions is far more useful than simple sarcastic generalizations.

There clearly are issues that some people report. There clearly are others who do not report issues.

Why the difference? There are likely plenty of correct explanations, ranging from some people not keeping the types of corals that actually show issues from aluminum, to some people having different batches of product to some people having more effective means of taking aluminum out of their system.

The fact that you had no issue hardly negates the reports from those who have. It just makes it a little deeper think than you might want to perform.
 
As I recall the corals more likely to have problems with aluminum were soft corals such as toad stools, etc.?

If so that may be why I didn't see any ill effects when I was using it as I don't keep that type of coral.
 
I had 3 of them in my sump. Did at Triton test which said I had Alum in my water. Got rid of them and after a few water changes my Alum got lower til there was almost none. Now when I do a test there is no more than just a tiny bit of Alum in the water so the blame goes to the MP blocks.
 
Hard to not be sarcastic to such a hyperbolic comment.

The fact that you had no issue hardly negates the reports from those who have. It just makes it a little deeper think than you might want to perform.

Thanks.

I know you are outspokenly against them as you have conducted tests and found them to be detrimental to your tanks so you do not use them. I should have just kept my mouth shut but I do feel like people get swept away in hype and the more "renowned" the source the faster it spread. Ie you, probably the most notable and respected reef chemist in the hobby and one of the biggest vendors in the hobby (BRS).

I wont argue with you because I will lose and all I have is anecdote but I dont just dismiss my own successes because someone says I should as per the OP.
 
As I recall the corals more likely to have problems with aluminum were soft corals such as toad stools, etc.?

If so that may be why I didn't see any ill effects when I was using it as I don't keep that type of coral.

Historically, leathers were the main thing that responded to aluminum from Phosguard (independent of the discussion of whether it is from particulate or soluble aluminum, leathers were the first responders), and those responded strongly in my tests of soluble aluminum, but not until levels above what most people see when using Marine Pure. The effects may be species dependent even among leathers, but there's almost no useful data on that.

In Jason's tests of a Marine Pure block, one of the main responders was a leather coral:
https://www.reef2reef.com/threads/h...t-leach-lets-guess.247034/page-9#post-2979612

"Effects that were noted after placing in the block:

1. Fiji Leather Coral quickly looked irritated and shrunk
2. Duncan retracted
3. One of my Bubble tips split (otherwise they looked great the entire time)
4. A single drastic short term drop in pH
5. All my sponges "shed" and shrunk

My Fiji Yellow Leather has not had full polyp extension the entire time the block was in place. It took over 2 weeks before it would start looking somewhat ok. The Duncan recovered fairly quickly. The sponges slowly started growing again.

Some of that I believe can be explained by a quick large growth of bacteria in the media (Duncan retracting and quick pH drop). But the longer term effects on the Fiji Leather I believe are more directly related to the Block and the Al content. I still don't know about the sponge if its directly but at least is indirectly related."
 
Thanks.

I know you are outspokenly against them as you have conducted tests and found them to be detrimental to your tanks so you do not use them. I should have just kept my mouth shut but I do feel like people get swept away in hype and the more "renowned" the source the faster it spread. Ie you, probably the most notable and respected reef chemist in the hobby and one of the biggest vendors in the hobby (BRS).

I wont argue with you because I will lose and all I have is anecdote but I dont just dismiss my own successes because someone says I should as per the OP.

FWIW, I'm actually not against keeping them in an existing tank if there are no apparent problems. So I'm not suggesting you remove yours. :)

I am against them more from the standpoint that nitrate goes too low for many folks, and that can be a bigger problem than nitrate too high. The release of stuff is just an added concern.
 
Ive been using the same Marine Pure block for over three years now. When it was first put into my system, I did see Aluminum levels rise from ICP test to test over a 8 month period. However, after that initial period, Aluminum levels fell, and I havent seen Aluminum pop up on an ICP test since then. I dont keep soft corals at all, so I find that its unlikely, given the resources on this online forum, that my system would see any measureable, significant issues from the levels of aluminum present. In addition, I believe phosphate binders that are Aluminum based (such as Triton's AL99) also raise Aluminum levels in your tank - this is remedied by swapping out the Aluminum based phosphate remover for an iron based phosphate remover (GFO) and then rotating the use of each one.

For what its worth, if you think that your tank would benefit from removing the Marine Pure, feel free to do so, but there are likely an equal number of tanks that use the product and show no ill effects - but no one is going to make a thread titled, "I use Marine Pure blocks and nothing seems to be different in regards to Aluminum." :D
 
Not cool that they kinda rigged the test to see if they did leach aluminum into the saltwater by dosing the saltwater to be higher than normal saltwater concentrations of aluminum.

Sorry, that’s not true. They (eta: “allege” is better than the original “said“) the excess aluminum was in an unnamed commercial salt mix. (Probably for liability type reasons)

As the link to the Polish guy’s test in the other thread mentioned, some commercial salts mixes come with a lot of Al. I’m not aware of anyone triton testing newly mixed artificial seawater, so i’m not sure what the baseline is for those salts.

Anyway, assuming your salt mix doesn’t have a lot of aluminum in it, I still would be hesitant to pull out a marinepure from an existing tank. It’s a lot of biofiltration, and a change like that can be massively destabilizing to your tank. I’m not saying people shouldn’t do it, but people should think about it carefully in advance.

And yes, I think there is an Internet bandwagon phenomenon going on. Both for marinepure at first, and now against marinepure. I’ve been around enough Internet fora in different hobbies to see people chasing odd numbers for reasons they don’t understand. I’m not saying people should keep their Marinepures, it’s just that you should understand very well what you’re doing, and don’t just pull things out ( or add things) because suddenly something is considered bad on the Internet. Especially if things are going OK. Major changes when things are going OK usually lead to at least temporary problems.

I don’t know if I’m gonna use it for my upcoming build. But It’s right now my entire bio filter, and I’m not going to remove it anytime soon because of that.

Sorry this is poorly written. I dictated this into my phone.
 
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I’m setting up my tank today... I bought a big block of this!

So yes or no?! It’s was $ so if no I would like to know.

Thoughts @Big G
 
I’m setting up my tank today... I bought a big block of this!

So yes or no?! It’s was $ so if no I would like to know.

Thoughts @Big G

I just contacted customer support. They responded instantly. It dose not leach aluminum. Read this
http://cermedia.com/blog.php?p=142

A review of literature suggests there are many possible sources of aluminum in a reef system which the hobbyists should be aware of. A brief summary includes;
• 8 different Salt Mixes – between 6 and 8 ppm 1
•Commonly available salt mix – 0.110 ppm 2
• Calcium Oxide – 1 ppm 2
•Food – 8.1 to 120 ppm 3
• Phosphate Removing Media – ??4
 

IF YOU HAD TO TAKE A REEFING EXAM, WOULD YOU PASS?

  • Yes!

    Votes: 32 45.7%
  • Not yet, but I have one that I want to buy in mind!

    Votes: 9 12.9%
  • No.

    Votes: 26 37.1%
  • Other (please explain).

    Votes: 3 4.3%

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