High levels of TIN in my tank

Discussion in 'Triton Applied Reef Bioscience' started by mdd1986, Apr 26, 2018.

  1. BigJohnny

    BigJohnny Valuable Member

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    my tin is similar to @PiscesPower and i too had no issues wtih sps, but tin can be present in many different forms so the triton test doesn't quite tell the whole story. 7 ug/l of tin in one tank could be in a much more toxic form than 10 ug/l in another, you just don't know.
     
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  2. tastyfish

    tastyfish Active Member UK Reef Club Member

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    Tin on its own will rarely come from corrosion. Look for chromium, copper and zinc also which will point to corrosion of plating layers on metal and magnets.

    If tin is the only contaminant, then it's likely to be from either new float glass or from plastic stablisers/plasticisers used in PVC
     
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  3. BigJohnny

    BigJohnny Valuable Member

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    I know several people that have had elevated tin levels from rusty vortechs that were fixed by replacing the wetside.
     
  4. Reefltx

    Reefltx Well-Known Member

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    What if the vortech magnets are not the problem, mine still looks new. Still waiting on my ICP results.
     
  5. BigJohnny

    BigJohnny Valuable Member

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    If yours looks new and the magnet inside isn't cracked then it's not the problem, it was the problem for me.
     
  6. mdd1986

    mdd1986 Active Member

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    I don't think its from anything rusting but I will deff check the power heads again.
     
  7. Reefltx

    Reefltx Well-Known Member

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    I got my icp back. Doing 10-15% a week was affective at reducing my Tin. It is down to 10ug from 40
     
  8. tastyfish

    tastyfish Active Member UK Reef Club Member

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    Yeah, I did this before I tried the carbon, didn't seem to mess with my levels which was good. I hate water changes, but they are effective for Tin removal! :)
     
  9. ryshark

    ryshark Active Member

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    Do you know how long tin would be present from float glass?
    I was having issues with acros so got an ICP which said my tin level was 17. So I looked at my equipment and all I found was a small screw in my sump with a little rust on it. I assumed this was the issue. Then I ran cuprisorb and started doing weekly 25% to 30% water changes for months to deplete the tin and my acros started doing much better. Then I stared spacing my water changes out to 3-weeks and my acros started going downhill again. I just got another ICP test and the tin is still there at 13. I checked my equipment last time and only found the screw in sump. I don't know what else it could be. I wouldn't be surprised if my glass from my tank was floated on tin when it was made. Does anybody know how long that it would take before tin would stop leaching from glass? My tank is almost 2-years old already.
     
  10. Land Shark

    Land Shark Valuable Member R2R Supporter Tampa Bay Reef Keepers Build Thread Contributor

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    Solder is made of tin, zinc and lead. My SPS were doing fine and then seemed to all die all in the same month while all parameters were steady. ICP showed tin at 40ug. Zinc and lead were both elevated. I couldn’t find the source for a couple months. Finally, a new xtra large filter sock with a soldered steel ring turned out to be the source. When the cloth started to rust, I knew I found it.

    It’s difficult to tell from the second picture below but the rust formed where the steel ring is soldered together.

    I thought the ring was made of heavy duty plastic. I could not tell without tearing the material apart.

    Hopefully my story helps someone.

    B3A4C4BA-6BF2-467B-86D1-66B0C13C4DB0.jpeg
    2B84C2C2-5D40-4477-B470-A8897EEFD4B7.jpeg
     
  11. ryshark

    ryshark Active Member

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    Wow, that's not even the part that is submerged, but it still caused issues. Thinking about what you said, only my Tin is elevated in both of my ICP reports. If I had some metal corrosion going on in my tank, I'm guessing it would be more that just Tin that is elevated... But I'm not sure.
     
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  12. tastyfish

    tastyfish Active Member UK Reef Club Member

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    If you are conducting water changes, I would expect you could rule out tin from float glass, unless you have added some between tests. Anything rusting needs to come out. Next, have you added any ceramics, equipment or pipework?

    Lastly, another possible source is your RO.

    Also, whilst toxicity is dependent on the tin compound (an ICP doesn't tell you this), it's effects are also multiplied if the corals are stressed with other parameters being out of spec, especially phosphates. So keep the water chemistry bang on whilst you deal with the Tin. Water changes will remove it, so I would continue doing these, aiming for a series of 15-20% changes.

    Cuprisorb has a poor tin affinity, Metasorb is reported to be much better. There is a carbon being tested here in the UK which removed Tin completely from my tank. I'm not sure if it's supplied in the US though.
     
  13. ryshark

    ryshark Active Member

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    Thanks for the reply, I haven't added anything and my RODI has also been tested and is clean. For my situation there is definitely a source causing the tin, regardless of how many water changes I do, the tin keeps coming back. All of my other parameters check out by my test and 2x ICP tests.
     
  14. tastyfish

    tastyfish Active Member UK Reef Club Member

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    Ok, so I'm going for corrosion. Tin is a common plating metal, so I would remove and check your pumps and any magnets. Are you using ceramic media, rock or frag plugs?

    Have you had your freshly mixed salt water tested? Contaminated Salt is another possible source.
     
  15. ryshark

    ryshark Active Member

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    Wouldn't other metals test elevated also if it was corrosion or not necessarily? I've checked my pumps, I'll have to check them again. I've been thinking about testing the freshly made saltwater mix, but hate to spend $50 on that. However, I've lost WAAAAY more than that on acros. So are you pretty certain its not from the glass for this long of time? The reason I ask is because I'm about to upgrade to a bigger tank. Actually, I already have everything I need including all new equipment. The new, larger tank is the same manufacturer, that's why I ask about how long tin can leach from float glass... if that's even how they make it, I don't know.
    On a side note, I do see corrosion on my stands door hinges which are above, but not directly over, my sump.
     
  16. Land Shark

    Land Shark Valuable Member R2R Supporter Tampa Bay Reef Keepers Build Thread Contributor

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    Tim from Triton shared with me that he personally experienced a heavy metals issue in his own tank. He said it turned out to be due to rust on the door hinges on his stand. He also said that when the doors open up, dust particles from the hinges are released into the air. I assume they then float into the sump water (my assumption). Tim also said that after he replaced the hinges his issue went away. Anyway, hope that helps.
     
  17. ryshark

    ryshark Active Member

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    Interesting, thanks for sharing this. I doubt that this is my problem, but maybe it is. You can see in my picture the top of the hinge has corrosion.

    IMG_2445.JPG
     
  18. Land Shark

    Land Shark Valuable Member R2R Supporter Tampa Bay Reef Keepers Build Thread Contributor

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    That’s your source. Just ask Tim@Triton and he will tell you. You can bet on it.
     
  19. tastyfish

    tastyfish Active Member UK Reef Club Member

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    Unfortunately I can't rule anything out really, but the tin on float glass is a layer. It doesn't leach, so I wouldn't expect it to suddenly appear. If you'd not done water changes since starting up, then it's possible, but I think unlikely given water changes.

    You are right in that corrosion would result in more than one metal. Since tin is a common plating metal, I would expect to see Nickel, Chromium or Copper showing too.

    For a new tank, wash everything down (wiping it) with citric acid solution. Do this with pipework and anything plastic. PVC plasticisers and stabilisers are probably the biggest source of tin contamination, which is why I asked if you'd added any new equipment.
     
  20. ryshark

    ryshark Active Member

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    I definitely will, my Triton ICP came back
    Thanks, I really hope this is the answer. I'll contact Tim
     
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