Trace Elements by Seachem

[edosan]

Hi Randy!

Just got my Triton Results and I found some high levels of

Zn: 48.918 µg/l (analysis) , 4 µg/l (setpoint)

Fe: 24.658 µg/l, 0,1 µg/l

Ni: 19.056 µg/l 5 µg/l

And small levels of Cu: 2.904 µg/l, 0.1 µg/l

I am trying to find the sources, Fe and Ni I know where they come from, so is checked, but Zn and Cu, probably are coming form Reef Trace?. I dose Seachem Reef Trace, and found that some levels are not very good if we take the set point of Triton. For example Zinc is off the chart acording to triton set point isn´t?

Amounts per 1 gram (from seachem web page)
Boron (B)0.028 mg
Cobalt (Co)0.0003 mg
Copper (Cu)0.032 mg
Manganese (Mn)0.085 mg
Molybdenum (Mo)0.003 mg
Zinc (Zn)0.169 mg
Rubidium (Rb)0.00008 mg
Nickel (Ni)0.00003 mg
Vanadium (V)0.00002 mg

Looks to me that some trace elements are not in the seawater ratio. What do you think?
Thanks in advance (I have stopped dossing trace elements)

 

[Cory]

Id say its coming from the trace elements and possibly food. You can add those trace elements by just doing water changes.

 

[edosan]

Thanks Cory!

Zinc in ReefTrace, is of the charts isn´t?

 

[Randy Holmes-Farley]

One wouldn't expect demand for trace elements to be the same as the natural ratio in the water, so that's not necessarily significant.

Zinc can come from galvanized metal parts. Any metal in or near the water? Corroded above it?

 

[edosan]

Could be, but I do not think so. I have 5 tanks and this one is the only that I dose reef trace, and the only one with Zinc and Cu. No metals in the reef (that I can find). The ratios on Reef Trace looks pretty weird tho.

 

[Randy Holmes-Farley]

Could be, but I do not think so. I have 5 tanks and this one is the only that I dose reef trace, and the only one with Zinc and Cu. No metals in the reef (that I can find). The ratios on Reef Trace looks pretty weird tho.

I don't think I know anything about what the ratios of supplements should be.

For comparison, we can consider how much of that additive it would take to get to your zinc levels.

If your tank has 100 gallons (379 L) of actual water volume, it contains 50 ug/L or 18,950 ug, or 19 mg.

At 0.17 mg/mL Zinc for the Reef Trace, it would take additions of about 112 ml with no depletion in tank to reach your level.

Have you added that much (scaled to your tank size)?

 

[edosan]

Proably I did, but i will stop reef trace, water changes and test it again.
Any way to remove zinc? Carbon?
Thanks Randy

 

[Randy Holmes-Farley]

Proably I did, but i will stop reef trace, water changes and test it again.
Any way to remove zinc? Carbon?
Thanks Randy

It's hard to know what form the zinc is in (bound to organics or not, for example, and which ones). Something like metasorb or a polyfilter may help remove it.

 

[Stigigemla]

A little math. If Your tank is 100 litres (26 gallons) it would contain 100 x 49 ug = 4,9 mg zink. That would mean 4,9 / 0,169 = 29 litres of Sechem Reef trace?
I would guess a hose clamp or incoming tap water.

 

[Randy Holmes-Farley]

A little math. If Your tank is 100 litres (26 gallons) it would contain 100 x 49 ug = 4,9 mg zink. That would mean 4,9 / 0,169 = 29 litres of Sechem Reef trace?
I would guess a hose clamp or incoming tap water.

The data presented above says the reef trace is 0.169 mg/ mL (it says per gram, which is ~ 1 mL), not mg/L. So it is 29 mL, not 29 L.

 

[edosan]

A little math. If Your tank is 100 litres (26 gallons) it would contain 100 x 49 ug = 4,9 mg zink. That would mean 4,9 / 0,169 = 29 litres of Sechem Reef trace?
I would guess a hose clamp or incoming tap water.

Thanks, like Randy said, your input data is wrong. And mainly is that what I have doubts about it, the Zinc ratio on Reef Trace.

I just copy paste the info found here:
http://www.seachem.com/reef-trace.php

 

[Stigigemla]

Correct, Randy i read litres.
In my mix of trace elements I use the double amount of NiSO4 6 H2O compared to the ZnCl H2O. Which means about the same amount of the metals.