Triton test showing high Tin

[thabizness]

I just received my first Triton test for my 180g mixed reef (leaning SPS heavy) and was surprised about my level of Tin (Sn) at 6.45 µg/l and Lithium (Li) at 430.00 µg/l. This tank has been setup for 1 year in its current 180g form. Before that reef was in a 75g tank for 2 years, and a 29g tank for a year before that.

I have used RC, IO, and RSCP as salt in the past few months. I do not have any metal clamps and use PVC for plumbing. Water movement is controlled by 3 MP40's and the return is Ehiem. Heaters are 2 cheap Aquaeon ones (yeah i know) and I do a AWC of 7570ml daily with a Neptune DOS. I have not tested my make up water and I use MAG pumps to move water from storage to tanks.

I do run carbon and I was thinking of running a Poly Filter to filter out the tin if possible. Would this be a good course of action? Are there any other ways to remove the Tin?

I am not too concerned about the Li since I hear most US tanks have it.

Outside of Tin and Lithium what are the community's thoughts on the results?

 

[jason2459]

It's showing high Lithium too. But I wouldn't worry about either at those levels.

FYI, I had similar tin levels at one point and a polyfilter did nothing for it.

 

[jason2459]

What is your target salinity level? According to those results with a few assumtions your salinity calculates out to 32.68ppt


Everything else looks fine.

 

[thabizness]

@jason2459 - Should be 1.026 which should equal 35. Ill have to test it when I get home today. My Apex is reading 34.4 but I know it drifts and only use it for trends. Thanks for that tip.

Li I'm not worried about. Most US tanks are high there.

You said you had high tin levels at one point. What did you do to get it to go down (assuming its down). At what point should be be concerned with Tin?

 

[jason2459]

Yes it was elevated briefly. I think 2 or 3 triton results showed it elevated and back to undetecable.

I do remember using a polyfilter after the first result and the second test showed the level slightly higher.

I took the polyfilter out and did nothing more then I normally do.

~1% daily water change, skimming, carbon dosing, very light ozone use, some gac, and an algae turf scrubber.

Bacteria and algae may consume trace amounts, the water change will remove (or could add) trace amounts, skimming may help remove organics with bound up tin, and the gac may do the same.

It could be added by many things besides just metal sitting in or around the tank. Food you feed being a primary source I would expect.

 

[jason2459]

Ah you're the one with a mag drive. This post was for you

I also just noticed you said you use a mag drive. You may want to check the screws are not rusting. Some people will dab silicone over them.

I've used a mag drive 1800 in my system since 2009 with no issues though and I haven't coated the screws with anything.