Where could Zinc come from?

[Lolleo]

Found this in my ATI analysis in my RO/DI bucket its the only thing that was observed in the RO/DI water. Any idea if it's toxic at this level and how to remove it/prevent it from continuing? This RODI system is the BRS 5 filter one and this is after about a month of using it, not sure if it's been like this over the month but I just got my test back from 2 weeks ago and found everything to be good except zinc.

Zinc

12.03 µg/l

0 µg/l

+12.03 µg/l

 

[Miami Reef]

Found this in my ATI analysis in my RO/DI bucket its the only thing that was observed in the RO/DI water. Any idea if it's toxic at this level and how to remove it/prevent it from continuing? This RODI system is the BRS 5 filter one and this is after about a month of using it, not sure if it's been like this over the month but I just got my test back from 2 weeks ago and found everything to be good except zinc.

Zinc

12.03 µg/l

0 µg/l

+12.03 µg/l

What level of zinc is in the tank?

 

[Lolleo]

What level of zinc is in the tank?

10.59 µg/l

1.98 µg/l

+8.61 µg/l

 

[shakacuz]

What level of zinc is in the tank?

12.03 is what is being found in the tank, i believe

edit; nervermind

 

[Miami Reef]

10.59 µg/l

1.98 µg/l

+8.61 µg/l

Here’s some quotes and links that @Randy Holmes-Farley responded to other users:

I personally expect that zinc from 0 ppm TDS is not the source. Even without a DI, zinc is quite well removed by reverse osmosis membranes.

https://www.reef2reef.com/threads/zinc-and-copper-help-please.331079/page-2#post-9547309

All these posts were from the same thread:

Zinc - 173% - 9.53ug/l

I wouldn't do anything about the iron and zinc. Some folks recommend iron much higher than that (I do not, but it obviously is not a big tox concern).

Zinc is a tad high, but likely not a tox concern.

I do not know the toxic levels of zinc for the organisms we keep, but many folks have somewhat elevated levels like yours without apparent issue. Papers I have seen looking for effects of zinc are usually adding much more than your level.

https://www.reef2reef.com/threads/icp-results-please-help-understand.880400/#post-9711491

 

[Miami Reef]

Here’s more information:

zinc oxide is sometimes used as an acid scavenger in plastic.

https://www.reef2reef.com/threads/tin-issue-solved.865596/page-4#post-9934184

 

[Lolleo]

Here’s more information:


https://www.reef2reef.com/threads/tin-issue-solved.865596/page-4#post-9934184

Would the brute food safe trashcan do that? As I saw its what everyone uses for RODI systems

 

[Lolleo]

I see he says something about a polyfilter is that like these? https://www.bulkreefsupply.com/trip...in-and-tds-meter-bulk-reef-supply-bundle.html or is this a completely different product?

 

[Miami Reef]

Would the brute food safe trashcan do that? As I saw its what everyone uses for RODI systems

I don’t think that would add zinc.

I see he says something about a polyfilter is that like these? https://www.bulkreefsupply.com/trip...in-and-tds-meter-bulk-reef-supply-bundle.html or is this a completely different product?

This is a polyfilter:
https://www.bulkreefsupply.com/poly...MIr9Sn5uXY-gIV3imtBh2xiwXOEAAYASAAEgIN6_D_BwE

 

[Lolleo]

I don’t think that would add zinc.


This is a polyfilter:
https://www.bulkreefsupply.com/poly...MIr9Sn5uXY-gIV3imtBh2xiwXOEAAYASAAEgIN6_D_BwE

So how would you add that to your RODI? like how would you use that?

 

[Lolleo]

My main thing is that since I used RODI to top off my tank won't the level in my tank keep rising just because I top off with it? And if so is there any real fix to this when it comes to it coming from the RODI system like if i added the single bed resins that I linked would that remove the zinc most likely?

 

[Jcrabb]

Found this in my ATI analysis in my RO/DI bucket its the only thing that was observed in the RO/DI water. Any idea if it's toxic at this level and how to remove it/prevent it from continuing? This RODI system is the BRS 5 filter one and this is after about a month of using it, not sure if it's been like this over the month but I just got my test back from 2 weeks ago and found everything to be good except zinc.

Zinc

12.03 µg/l

0 µg/l

+12.03 µg/l

I had the same issue but in my tank. I use the same brs rodi. Noticed something happening with all my monti but nothing else. Put chemipure in my sump and it went away. Montis are recovering. I need to test rodi output, I assumed it was from salt or fish food?

 

[Lolleo]

I had the same issue but in my tank. I use the same brs rodi. Noticed something happening with all my monti but nothing else. Put chemipure in my sump and it went away. Montis are recovering. I need to test rodi output, I assumed it was from salt or fish food?

Ya mine is coming from my RODI system some how or something in the loop is causing it as the ATI test is of the water basically right out the RODI system once it goes into the bucket.

 

[WVNed]

Any galvanized hardware/screws near you tank? Zinc is used to coat common hardware.

 

[Lolleo]

Any galvanized hardware/screws near you tank? Zinc is used to coat common hardware.

The only thing I have installed to the bucket is everything that comes with the BRS RODI system which is basically just the float(plastic) and has a plastic valve

 

[Miami Reef]

So how would you add that to your RODI? like how would you use that?

You don’t use polyfilters in the RO/DI.

 

[Lolleo]

You don’t use polyfilters in the RO/DI.

Ya I am guessing its like a filter floss basically you would use in the tank ? But how could I remove it with my RODI system like would adding the anion and cation 3 stage filter to the end fix it as it seems to say it helps with removing

Sodium	+1	Cation Resin
Calcium	+2	Cation Resin
Magnesium	+2	Cation Resin
Aluminum	+3	Cation Resin
Ferric Iron	+2	Cation Resin
Ferrous Iron	+3	Cation Resin
Chloride	-1	Anion Resin
Bicarbonate	-1	Anion Resin
Carbonate	-2	Anion Resin
Sulfate	-2	Anion Resin
Nitrate	-1	Anion Resin
Phosphate	-3	Anion Resin
Silcate	-4	Anion Resin

 

[Randy Holmes-Farley Verified Community Expert]

I don’t know if it is high enough to be any issue (I doubt it) and it also isn’t clear the ro/di is the main tank source since it gets diluted greatly when added to tank water.

A metal binder might bind it (polyfilter, cuprisorb, metasorb, etc).

 

[Lolleo]

I don’t know if it is high enough to be any issue (I doubt it) and it also isn’t clear the ro/di is the main tank source since it gets diluted greatly when added to tank water.

A metal binder might bind it (polyfilter, cuprisorb, metasorb, etc).

Thank you randy if I see it rise a little too high I will get some poly filter!